diff --git a/docs/components/TradeComponent.md b/docs/components/TradeComponent.md
index 369a812..0d04c25 100644
--- a/docs/components/TradeComponent.md
+++ b/docs/components/TradeComponent.md
@@ -35,6 +35,11 @@ interface TradePositionItem {
 - **Buy 模式 Amount 区**：无论余额是否充足，均显示 Amount 标签、Balance、金额输入、+$1/+$20/+$100/Max 快捷按钮（桌面端、嵌入弹窗、移动端弹窗一致）
 - 余额不足时 Buy 显示 Deposit 按钮
 - 25%/50%/Max 快捷份额
+- **Sell 模式 UI 优化**：
+  - Shares 标签与 Max shares 提示同行显示（`max-shares-inline`）
+  - 输入框独占一行（`shares-input-wrapper`）
+  - 25%/50%/Max 按钮独立一行（`sell-shares-buttons`）
+  - 整体布局更清晰：`Shares          Max: 2` → `[输入框]` → `[25%][50%][Max]`
 - 调用 market API 下单、Split、Merge
 - **合并/拆分成功后触发事件**：`mergeSuccess`、`splitSuccess`，父组件监听后可刷新持仓列表
 
diff --git a/src/api/market.ts b/src/api/market.ts
index 57412e2..41bd357 100644
--- a/src/api/market.ts
+++ b/src/api/market.ts
@@ -24,6 +24,8 @@ export interface ClobSubmitOrderRequest {
   taker: boolean
   tokenID: string
   userID: number
+  /** 市场 ID */
+  marketID: string
 }
 
 /**
diff --git a/src/components/TradeComponent.vue b/src/components/TradeComponent.vue
index c8fa3e2..e45710f 100644
--- a/src/components/TradeComponent.vue
+++ b/src/components/TradeComponent.vue
@@ -77,26 +77,28 @@
         <!-- Sell Market: Shares input + 25%/50%/Max -->
         <template v-if="activeTab === 'sell'">
           <div class="input-group shares-group">
-            <div class="shares-header">
+            <div class="shares-header sell-shares-header">
               <span class="label">{{ t('trade.shares') }}</span>
-              <div class="shares-input">
-                <v-text-field
-                  :model-value="shares"
-                  type="number"
-                  min="1"
-                  class="shares-input-field"
-                  hide-details
-                  density="compact"
-                  @update:model-value="onSharesInput"
-                  @keydown="onSharesKeydown"
-                  @paste="onSharesPaste"
-                ></v-text-field>
-              </div>
+              <span class="max-shares-inline">{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span>
             </div>
-            <div class="shares-buttons">
+            <div class="shares-input-wrapper">
+              <v-text-field
+                :model-value="shares"
+                type="number"
+                min="1"
+                class="shares-input-field"
+                hide-details
+                variant="outlined"
+                density="compact"
+                @update:model-value="onSharesInput"
+                @keydown="onSharesKeydown"
+                @paste="onSharesPaste"
+              ></v-text-field>
+            </div>
+            <div class="shares-buttons sell-shares-buttons">
               <v-btn class="share-btn" @click="setSharesPercentage(25)">25%</v-btn>
               <v-btn class="share-btn" @click="setSharesPercentage(50)">50%</v-btn>
-              <v-btn class="share-btn" @click="setSharesPercentage(100)">{{ t('trade.max') }}</v-btn>
+              <v-btn class="share-btn" @click="setMaxShares">{{ t('trade.max') }}</v-btn>
             </div>
           </div>
         </template>
@@ -212,26 +214,28 @@
         <!-- Sell: Shares + To receive + Avg. Price，只显示 Sell Yes/No（无 {{ t('trade.deposit') }}） -->
         <template v-else>
           <div class="input-group shares-group">
-            <div class="shares-header">
+            <div class="shares-header sell-shares-header">
               <span class="label">{{ t('trade.shares') }}</span>
-              <div class="shares-input">
-                <v-text-field
-                  :model-value="shares"
-                  type="number"
-                  min="1"
-                  class="shares-input-field"
-                  hide-details
-                  density="compact"
-                  @update:model-value="onSharesInput"
-                  @keydown="onSharesKeydown"
-                  @paste="onSharesPaste"
-                ></v-text-field>
-              </div>
+              <span class="max-shares-inline">{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span>
             </div>
-            <div class="shares-buttons">
+            <div class="shares-input-wrapper">
+              <v-text-field
+                :model-value="shares"
+                type="number"
+                min="1"
+                variant="outlined"
+                class="shares-input-field"
+                hide-details
+                density="compact"
+                @update:model-value="onSharesInput"
+                @keydown="onSharesKeydown"
+                @paste="onSharesPaste"
+              ></v-text-field>
+            </div>
+            <div class="shares-buttons sell-shares-buttons">
               <v-btn class="share-btn" @click="setSharesPercentage(25)">25%</v-btn>
               <v-btn class="share-btn" @click="setSharesPercentage(50)">50%</v-btn>
-              <v-btn class="share-btn" @click="setSharesPercentage(100)">{{ t('trade.max') }}</v-btn>
+              <v-btn class="share-btn" @click="setMaxShares">{{ t('trade.max') }}</v-btn>
             </div>
           </div>
           <div class="total-section">
@@ -298,6 +302,7 @@
               min="0"
               max="100"
               step="0.01"
+              variant="outlined"
               class="price-input-field"
               hide-details
               density="compact"
@@ -316,21 +321,23 @@
 
       <!-- Shares -->
       <div class="input-group shares-group">
-        <div class="shares-header">
+        <div class="shares-header sell-shares-header">
           <span class="label">{{ t('trade.shares') }}</span>
-          <div class="shares-input">
-            <v-text-field
-              :model-value="shares"
-              type="number"
-              min="1"
-              class="shares-input-field"
-              hide-details
-              density="compact"
-              @update:model-value="onSharesInput"
-              @keydown="onSharesKeydown"
-              @paste="onSharesPaste"
-            ></v-text-field>
-          </div>
+          <span v-if="activeTab === 'sell'" class="max-shares-inline">{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span>
+        </div>
+        <div class="shares-input-wrapper">
+          <v-text-field
+            :model-value="shares"
+            type="number"
+            min="1"
+            variant="outlined"
+            class="shares-input-field"
+            hide-details
+            density="compact"
+            @update:model-value="onSharesInput"
+            @keydown="onSharesKeydown"
+            @paste="onSharesPaste"
+          ></v-text-field>
         </div>
         <!-- Buy模式的份额调整按钮 -->
         <div v-if="activeTab === 'buy'" class="shares-buttons">
@@ -341,10 +348,10 @@
           <v-btn class="share-btn" @click="adjustShares(200)">+200</v-btn>
         </div>
         <!-- Sell模式的份额调整按钮 -->
-        <div v-else class="shares-buttons">
+        <div v-else class="shares-buttons sell-shares-buttons">
           <v-btn class="share-btn" @click="setSharesPercentage(25)">25%</v-btn>
           <v-btn class="share-btn" @click="setSharesPercentage(50)">50%</v-btn>
-          <v-btn class="share-btn" @click="setSharesPercentage(100)">{{ t('trade.max') }}</v-btn>
+          <v-btn class="share-btn" @click="setMaxShares">{{ t('trade.max') }}</v-btn>
         </div>
         <div v-if="activeTab === 'buy'" class="matching-info">
           <v-icon size="14">mdi-information</v-icon>
@@ -483,26 +490,28 @@
             <!-- Sell Market: Shares input + 25%/50%/Max -->
             <template v-if="activeTab === 'sell'">
               <div class="input-group shares-group">
-                <div class="shares-header">
+                <div class="shares-header sell-shares-header">
                   <span class="label">{{ t('trade.shares') }}</span>
-                  <div class="shares-input">
-                    <v-text-field
-                      :model-value="shares"
-                      type="number"
-                      min="1"
-                      class="shares-input-field"
-                      hide-details
-                      density="compact"
-                      @update:model-value="onSharesInput"
-                      @keydown="onSharesKeydown"
-                      @paste="onSharesPaste"
-                    ></v-text-field>
-                  </div>
+                  <span class="max-shares-inline">{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span>
                 </div>
-                <div class="shares-buttons">
+                <div class="shares-input-wrapper">
+                  <v-text-field
+                    :model-value="shares"
+                    type="number"
+                    min="1"
+                    class="shares-input-field"
+                    hide-details
+                    density="compact"
+                    variant="outlined"
+                    @update:model-value="onSharesInput"
+                    @keydown="onSharesKeydown"
+                    @paste="onSharesPaste"
+                  ></v-text-field>
+                </div>
+                <div class="shares-buttons sell-shares-buttons">
                   <v-btn class="share-btn" @click="setSharesPercentage(25)">25%</v-btn>
                   <v-btn class="share-btn" @click="setSharesPercentage(50)">50%</v-btn>
-                  <v-btn class="share-btn" @click="setSharesPercentage(100)">{{ t('trade.max') }}</v-btn>
+                  <v-btn class="share-btn" @click="setMaxShares">{{ t('trade.max') }}</v-btn>
                 </div>
               </div>
             </template>
@@ -598,26 +607,28 @@
             <!-- Sell: Shares + To receive + Avg. Price -->
             <template v-else>
               <div class="input-group shares-group">
-                <div class="shares-header">
+                <div class="shares-header sell-shares-header">
                   <span class="label">{{ t('trade.shares') }}</span>
-                  <div class="shares-input">
-                    <v-text-field
-                      :model-value="shares"
-                      type="number"
-                      min="1"
-                      class="shares-input-field"
-                      hide-details
-                      density="compact"
-                      @update:model-value="onSharesInput"
-                      @keydown="onSharesKeydown"
-                      @paste="onSharesPaste"
-                    ></v-text-field>
-                  </div>
+                  <span class="max-shares-inline">{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span>
                 </div>
-                <div class="shares-buttons">
+                <div class="shares-input-wrapper">
+                  <v-text-field
+                    :model-value="shares"
+                    type="number"
+                    min="1"
+                    class="shares-input-field"
+                    hide-details
+                    density="compact"
+                    variant="outlined"
+                    @update:model-value="onSharesInput"
+                    @keydown="onSharesKeydown"
+                    @paste="onSharesPaste"
+                  ></v-text-field>
+                </div>
+                <div class="shares-buttons sell-shares-buttons">
                   <v-btn class="share-btn" @click="setSharesPercentage(25)">25%</v-btn>
                   <v-btn class="share-btn" @click="setSharesPercentage(50)">50%</v-btn>
-                  <v-btn class="share-btn" @click="setSharesPercentage(100)">{{ t('trade.max') }}</v-btn>
+                  <v-btn class="share-btn" @click="setMaxShares">{{ t('trade.max') }}</v-btn>
                 </div>
               </div>
               <div class="total-section">
@@ -676,6 +687,7 @@
                   min="0"
                   max="100"
                   step="0.01"
+                  variant="outlined"
                   class="price-input-field"
                   hide-details
                   density="compact"
@@ -692,21 +704,23 @@
             </div>
           </div>
           <div class="input-group shares-group">
-            <div class="shares-header">
+            <div class="shares-header sell-shares-header">
               <span class="label">{{ t('trade.shares') }}</span>
-              <div class="shares-input">
-                <v-text-field
-                  :model-value="shares"
-                  type="number"
-                  min="1"
-                  class="shares-input-field"
-                  hide-details
-                  density="compact"
-                  @update:model-value="onSharesInput"
-                  @keydown="onSharesKeydown"
-                  @paste="onSharesPaste"
-                ></v-text-field>
-              </div>
+              <span v-if="activeTab === 'sell'" class="max-shares-inline">{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span>
+            </div>
+            <div class="shares-input-wrapper">
+              <v-text-field
+                :model-value="shares"
+                type="number"
+                min="1"
+                class="shares-input-field"
+                hide-details
+                density="compact"
+                variant="outlined"
+                @update:model-value="onSharesInput"
+                @keydown="onSharesKeydown"
+                @paste="onSharesPaste"
+              ></v-text-field>
             </div>
             <div v-if="activeTab === 'buy'" class="shares-buttons">
               <v-btn class="share-btn" @click="adjustShares(-100)">-100</v-btn>
@@ -714,10 +728,10 @@
               <v-btn class="share-btn" @click="adjustShares(10)">+10</v-btn>
               <v-btn class="share-btn" @click="adjustShares(100)">+100</v-btn>
             </div>
-            <div v-else class="shares-buttons">
+            <div v-else class="shares-buttons sell-shares-buttons">
               <v-btn class="share-btn" @click="setSharesPercentage(25)">25%</v-btn>
               <v-btn class="share-btn" @click="setSharesPercentage(50)">50%</v-btn>
-              <v-btn class="share-btn" @click="setSharesPercentage(100)">{{ t('trade.max') }}</v-btn>
+              <v-btn class="share-btn" @click="setMaxShares">{{ t('trade.max') }}</v-btn>
             </div>
           </div>
           <div class="input-group expiration-group">
@@ -872,26 +886,28 @@
               <!-- Sell Market: Shares input + 25%/50%/Max -->
               <template v-if="activeTab === 'sell'">
                 <div class="input-group shares-group">
-                  <div class="shares-header">
+                  <div class="shares-header sell-shares-header">
                     <span class="label">{{ t('trade.shares') }}</span>
-                    <div class="shares-input">
-                      <v-text-field
-                        :model-value="shares"
-                        type="number"
-                        min="1"
-                        class="shares-input-field"
-                        hide-details
-                        density="compact"
-                        @update:model-value="onSharesInput"
-                        @keydown="onSharesKeydown"
-                        @paste="onSharesPaste"
-                      ></v-text-field>
-                    </div>
+                    <span class="max-shares-inline">{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span>
                   </div>
-                  <div class="shares-buttons">
+                  <div class="shares-input-wrapper">
+                    <v-text-field
+                      :model-value="shares"
+                      type="number"
+                      min="1"
+                      class="shares-input-field"
+                      hide-details
+                      density="compact"
+                      variant="outlined"
+                      @update:model-value="onSharesInput"
+                      @keydown="onSharesKeydown"
+                      @paste="onSharesPaste"
+                    ></v-text-field>
+                  </div>
+                  <div class="shares-buttons sell-shares-buttons">
                     <v-btn class="share-btn" @click="setSharesPercentage(25)">25%</v-btn>
                     <v-btn class="share-btn" @click="setSharesPercentage(50)">50%</v-btn>
-                    <v-btn class="share-btn" @click="setSharesPercentage(100)">{{ t('trade.max') }}</v-btn>
+                    <v-btn class="share-btn" @click="setMaxShares">{{ t('trade.max') }}</v-btn>
                   </div>
                 </div>
               </template>
@@ -988,26 +1004,28 @@
               <!-- Sell: Shares + To receive + Avg. Price -->
               <template v-else>
                 <div class="input-group shares-group">
-                  <div class="shares-header">
+                  <div class="shares-header sell-shares-header">
                     <span class="label">{{ t('trade.shares') }}</span>
-                    <div class="shares-input">
-                      <v-text-field
-                        :model-value="shares"
-                        type="number"
-                        min="1"
-                        class="shares-input-field"
-                        hide-details
-                        density="compact"
-                        @update:model-value="onSharesInput"
-                        @keydown="onSharesKeydown"
-                        @paste="onSharesPaste"
-                      ></v-text-field>
-                    </div>
+                    <span class="max-shares-inline">{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span>
                   </div>
-                  <div class="shares-buttons">
+                  <div class="shares-input-wrapper">
+                    <v-text-field
+                      :model-value="shares"
+                      type="number"
+                      min="1"
+                      class="shares-input-field"
+                      hide-details
+                      variant="outlined"
+                      density="compact"
+                      @update:model-value="onSharesInput"
+                      @keydown="onSharesKeydown"
+                      @paste="onSharesPaste"
+                    ></v-text-field>
+                  </div>
+                  <div class="shares-buttons sell-shares-buttons">
                     <v-btn class="share-btn" @click="setSharesPercentage(25)">25%</v-btn>
                     <v-btn class="share-btn" @click="setSharesPercentage(50)">50%</v-btn>
-                    <v-btn class="share-btn" @click="setSharesPercentage(100)">{{ t('trade.max') }}</v-btn>
+                    <v-btn class="share-btn" @click="setMaxShares">{{ t('trade.max') }}</v-btn>
                   </div>
                 </div>
                 <div class="total-section">
@@ -1069,6 +1087,7 @@
                     class="price-input-field"
                     hide-details
                     density="compact"
+                    variant="outlined"
                     suffix="¢"
                     @update:model-value="onLimitPriceInput"
                     @blur="onLimitPriceBlur"
@@ -1082,21 +1101,23 @@
               </div>
             </div>
             <div class="input-group shares-group">
-              <div class="shares-header">
+              <div class="shares-header sell-shares-header">
                 <span class="label">{{ t('trade.shares') }}</span>
-                <div class="shares-input">
-                  <v-text-field
-                    :model-value="shares"
-                    type="number"
-                    min="1"
-                    class="shares-input-field"
-                    hide-details
-                    density="compact"
-                    @update:model-value="onSharesInput"
-                    @keydown="onSharesKeydown"
-                    @paste="onSharesPaste"
-                  ></v-text-field>
-                </div>
+                <span v-if="activeTab === 'sell'" class="max-shares-inline">{{ t('trade.maxShares') }}: {{ maxAvailableShares }}</span>
+              </div>
+              <div class="shares-input-wrapper">
+                <v-text-field
+                  :model-value="shares"
+                  type="number"
+                  min="1"
+                  class="shares-input-field"
+                  hide-details
+                  density="compact"
+                  variant="outlined"
+                  @update:model-value="onSharesInput"
+                  @keydown="onSharesKeydown"
+                  @paste="onSharesPaste"
+                ></v-text-field>
               </div>
               <div v-if="activeTab === 'buy'" class="shares-buttons">
                 <v-btn class="share-btn" @click="adjustShares(-100)">-100</v-btn>
@@ -1104,10 +1125,10 @@
                 <v-btn class="share-btn" @click="adjustShares(10)">+10</v-btn>
                 <v-btn class="share-btn" @click="adjustShares(100)">+100</v-btn>
               </div>
-              <div v-else class="shares-buttons">
+              <div v-else class="shares-buttons sell-shares-buttons">
                 <v-btn class="share-btn" @click="setSharesPercentage(25)">25%</v-btn>
                 <v-btn class="share-btn" @click="setSharesPercentage(50)">50%</v-btn>
-                <v-btn class="share-btn" @click="setSharesPercentage(100)">{{ t('trade.max') }}</v-btn>
+                <v-btn class="share-btn" @click="setMaxShares">{{ t('trade.max') }}</v-btn>
               </div>
             </div>
             <div class="input-group expiration-group">
@@ -1602,6 +1623,15 @@ watch(
   { deep: true },
 )
 
+watch(
+  () => activeTab.value,
+  (newTab) => {
+    if (newTab === 'sell') {
+      setMaxShares()
+    }
+  },
+)
+
 // Methods
 const handleOptionChange = (option: 'yes' | 'no') => {
   selectedOption.value = option
@@ -1609,6 +1639,11 @@ const handleOptionChange = (option: 'yes' | 'no') => {
   const noP = props.market?.noPrice ?? 0.82
   limitPrice.value = clampLimitPrice(option === 'yes' ? yesP : noP)
   emit('optionChange', option)
+  
+  // Set max shares when option changes in sell mode
+  if (activeTab.value === 'sell') {
+    setMaxShares()
+  }
 }
 
 /** 输入为美分（0–100），与 Yes/No 按钮单位一致 */
@@ -1696,9 +1731,32 @@ const adjustShares = (amount: number) => {
   shares.value = clampShares(shares.value + amount)
 }
 
+/** 计算当前选中选项的持仓份额 */
+const currentOptionPositionShares = computed(() => {
+  const positions = props.positions ?? []
+  const currentOutcome = selectedOption.value === 'yes' ? 'Yes' : 'No'
+  let totalShares = 0
+  
+  for (const pos of positions) {
+    if (pos.outcomeWord === currentOutcome) {
+      const num = pos.sharesNum ?? parseFloat(pos.shares?.replace(/[^0-9.]/g, ''))
+      if (Number.isFinite(num) && num > 0) {
+        totalShares += num
+      }
+    }
+  }
+  
+  return totalShares
+})
+
+/** 最大可卖出份额 */
+const maxAvailableShares = computed(() => {
+  return Math.floor(currentOptionPositionShares.value)
+})
+
 // 份额百分比调整方法（仅在Sell模式下使用）
 const setSharesPercentage = (percentage: number) => {
-  const maxShares = 100
+  const maxShares = currentOptionPositionShares.value || 100
   shares.value = clampShares(Math.round((maxShares * percentage) / 100))
 }
 
@@ -1712,6 +1770,14 @@ const setMaxAmount = () => {
   amount.value = balance.value
 }
 
+// 设置最大份额（基于当前选项的持仓）
+const setMaxShares = () => {
+  const maxShares = currentOptionPositionShares.value
+  if (maxShares > 0) {
+    shares.value = clampShares(maxShares)
+  }
+}
+
 /** Buy 模式：余额是否足够（>= 所需金额且不为 0）。cost：balance>0 时用 totalPrice，否则用 amount */
 const canAffordBuy = computed(() => {
   const bal = balance.value
@@ -1808,6 +1874,7 @@ async function submitOrder() {
         taker: true,
         tokenID: tokenId,
         userID: userIdNum,
+        marketID: marketId || '',
       },
       { headers },
     )
@@ -2067,6 +2134,35 @@ async function submitOrder() {
   box-shadow: none !important;
 }
 
+/* Sell模式：Max shares行内提示样式（放在Shares标签右侧） */
+.max-shares-inline {
+  font-size: 12px;
+  color: #6b7280;
+  font-weight: 500;
+  margin-left: auto;
+}
+
+/* Sell模式：输入框独占一行 */
+.shares-input-wrapper {
+  margin: 4px 0 8px;
+}
+
+.shares-input-wrapper .v-field {
+  border-radius: 4px;
+}
+
+/* Sell模式：shares区域布局优化 */
+.sell-shares-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 4px;
+}
+
+.sell-shares-buttons {
+  margin-top: 8px;
+}
+
 .matching-info {
   display: flex;
   align-items: center;
diff --git a/src/locales/en.json b/src/locales/en.json
index 61836e1..0a0baf3 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -58,6 +58,7 @@
     "avgPrice": "Avg. Price",
     "max": "Max",
     "balanceLabel": "Balance",
+    "maxShares": "Max shares",
     "pleaseLogin": "Please log in first",
     "pleaseSelectMarket": "Please select a market (with clobTokenIds)",
     "userError": "User info error",
diff --git a/src/locales/ja.json b/src/locales/ja.json
index 2f2c077..a63e2c5 100644
--- a/src/locales/ja.json
+++ b/src/locales/ja.json
@@ -58,6 +58,7 @@
     "avgPrice": "平均価格",
     "max": "最大",
     "balanceLabel": "残高",
+    "maxShares": "最大シェア",
     "pleaseLogin": "先にログインしてください",
     "pleaseSelectMarket": "市場を選択してください（clobTokenIds が必要）",
     "userError": "ユーザー情報エラー",
diff --git a/src/locales/ko.json b/src/locales/ko.json
index 142c5b3..51c5440 100644
--- a/src/locales/ko.json
+++ b/src/locales/ko.json
@@ -58,6 +58,7 @@
     "avgPrice": "평균 가격",
     "max": "최대",
     "balanceLabel": "잔액",
+    "maxShares": "최대 주식",
     "pleaseLogin": "먼저 로그인하세요",
     "pleaseSelectMarket": "시장을 선택하세요 (clobTokenIds 필요)",
     "userError": "사용자 정보 오류",
diff --git a/src/locales/zh-CN.json b/src/locales/zh-CN.json
index d23ce02..ec85a7d 100644
--- a/src/locales/zh-CN.json
+++ b/src/locales/zh-CN.json
@@ -58,6 +58,7 @@
     "avgPrice": "平均价",
     "max": "最大",
     "balanceLabel": "余额",
+    "maxShares": "最大份额",
     "pleaseLogin": "请先登录",
     "pleaseSelectMarket": "请先选择市场（需包含 clobTokenIds）",
     "userError": "用户信息异常",
diff --git a/src/locales/zh-TW.json b/src/locales/zh-TW.json
index 0570bd5..ae5ec22 100644
--- a/src/locales/zh-TW.json
+++ b/src/locales/zh-TW.json
@@ -58,6 +58,7 @@
         "avgPrice": "平均價",
         "max": "最大",
         "balanceLabel": "餘額",
+        "maxShares": "最大份額",
         "pleaseLogin": "請先登入",
         "pleaseSelectMarket": "請先選擇市場（需包含 clobTokenIds）",
         "userError": "用戶資訊異常",