diff --git a/src/api/order.ts b/src/api/order.ts
index 0b6f453..7e50bb3 100644
--- a/src/api/order.ts
+++ b/src/api/order.ts
@@ -191,6 +191,8 @@ export interface OpenOrderDisplayItem {
   filledDisplay?: string
   orderID?: number
   tokenID?: string
+  /** 已成交数量达到原始总数量，不可撤单 */
+  fullyFilled?: boolean
 }
 
 /** OrderType GTC=0 表示 Until Cancelled */
@@ -219,6 +221,7 @@ export function mapOrderToOpenOrderItem(order: ClobOrderItem): OpenOrderDisplayI
   const expiration =
     order.orderType === OrderType.GTC ? 'Until Cancelled' : order.expiration?.toString() ?? ''
   const actionLabel = sideNum === Side.Buy ? `Buy ${outcome}` : `Sell ${outcome}`
+  const fullyFilled = originalSize <= 0 || sizeMatched >= originalSize
   return {
     id,
     market,
@@ -232,5 +235,6 @@ export function mapOrderToOpenOrderItem(order: ClobOrderItem): OpenOrderDisplayI
     filledDisplay: filled,
     orderID: order.ID,
     tokenID: order.assetID,
+    fullyFilled,
   }
 }
diff --git a/src/components/OrderBook.vue b/src/components/OrderBook.vue
index ff7680b..7bad62e 100644
--- a/src/components/OrderBook.vue
+++ b/src/components/OrderBook.vue
@@ -250,7 +250,8 @@ const bidsWithCumulativeTotal = computed(() => {
 
   return sortedBids.map((bid) => {
     // Calculate current bid's value
-    const bidValue = (bid.price * bid.shares) / 100 // Convert cents to dollars
+    console.log('bid.price', bid.price)
+    const bidValue = (bid.price * bid.shares) / 100.0 // Convert cents to dollars
     cumulativeTotal += bidValue
     return {
       ...bid,
diff --git a/src/views/TradeDetail.vue b/src/views/TradeDetail.vue
index 34e2692..4bb36be 100644
--- a/src/views/TradeDetail.vue
+++ b/src/views/TradeDetail.vue
@@ -108,7 +108,7 @@
                       variant="text"
                       size="small"
                       color="error"
-                      :disabled="cancelOrderLoading"
+                      :disabled="cancelOrderLoading || ord.fullyFilled"
                       @click="cancelMarketOrder(ord)"
                     >
                       {{ t('activity.cancelOrder') }}
@@ -993,6 +993,7 @@ async function loadMarketOpenOrders() {
 const cancelOrderLoading = ref(false)
 
 async function cancelMarketOrder(ord: OpenOrderDisplayItem) {
+  if (ord.fullyFilled) return
   const orderID = ord.orderID ?? 0
   const tokenID = ord.tokenID ?? ''
   const uid = userStore.user?.id ?? userStore.user?.ID
diff --git a/src/views/Wallet.vue b/src/views/Wallet.vue
index bb5b620..a31be82 100644
--- a/src/views/Wallet.vue
+++ b/src/views/Wallet.vue
@@ -358,7 +358,7 @@
                   size="small"
                   class="order-cancel-icon"
                   color="error"
-                  :disabled="cancelOrderLoading"
+                  :disabled="cancelOrderLoading || ord.fullyFilled"
                   @click.stop="cancelOrder(ord)"
                 >
                   <v-icon size="20">mdi-close</v-icon>
@@ -404,7 +404,7 @@
                     variant="text"
                     size="small"
                     color="error"
-                    :disabled="cancelOrderLoading"
+                    :disabled="cancelOrderLoading || ord.fullyFilled"
                     @click="cancelOrder(ord)"
                     >Cancel</v-btn
                   >
@@ -718,6 +718,8 @@ interface OpenOrder {
   /** 取消订单 API 用 */
   orderID?: number
   tokenID?: string
+  /** 已成交数量达到原始总数量，不可撤单 */
+  fullyFilled?: boolean
 }
 interface HistoryItem {
   id: string
@@ -977,6 +979,7 @@ const cancelOrderLoading = ref(false)
 const cancelOrderError = ref('')
 const showCancelError = ref(false)
 async function cancelOrder(ord: OpenOrder) {
+  if (ord.fullyFilled) return
   const orderID = ord.orderID ?? 5
   const tokenID = ord.tokenID ?? MOCK_TOKEN_ID
   const uid = userStore.user?.id ?? userStore.user?.ID