diff --git a/src/api/pmset.ts b/src/api/pmset.ts
index ce2460f..3d6b83d 100644
--- a/src/api/pmset.ts
+++ b/src/api/pmset.ts
@@ -199,3 +199,24 @@ export async function getWithdrawConfig(
   return get<WithdrawConfigResponse>('/pmset/getWithdrawConfig', undefined, config)
 }
 
+/** 充值配置（GET /pmset/getDepositConfig） */
+export interface DepositConfig {
+  /** 最小到账金额，最小精度整数（1U=1e6；系统参数配置口径 1=1U，默认 10） */
+  minDepositAmount: number
+}
+
+export interface DepositConfigResponse extends ApiResponse<DepositConfig> {
+  code: number
+  data?: DepositConfig
+  msg: string
+}
+
+/**
+ * GET /pmset/getDepositConfig
+ * 获取最小到账金额（系统参数 minDepositAmount，配置 1=1U，默认 10；缺失自动插入）
+ */
+export async function getDepositConfig(
+  config?: { headers?: Record<string, string> },
+): Promise<DepositConfigResponse> {
+  return get<DepositConfigResponse>('/pmset/getDepositConfig', undefined, config)
+}
diff --git a/src/components/DepositDialog.vue b/src/components/DepositDialog.vue
index 59472fb..db44f31 100644
--- a/src/components/DepositDialog.vue
+++ b/src/components/DepositDialog.vue
@@ -126,6 +126,7 @@
             @update:model-value="onDepositNetworkChange"
           />
           <p class="crypto-support-tip">{{ t('deposit.supportedTip') }}</p>
+          <p class="crypto-min-amount-tip">{{ t('deposit.minArrivalAmount', { amount: minDepositDisplay }) }}</p>
           <div class="crypto-addr-head">
             <span class="crypto-addr-title">{{ t('deposit.depositAddress') }}</span>
             <v-btn color="primary" variant="text" class="crypto-copy-btn" :disabled="!depositAddress" @click="copyAddress">
@@ -214,6 +215,7 @@
                 @update:model-value="onDepositNetworkChange"
               />
               <p class="crypto-support-tip exchange-mm-hint">{{ t('deposit.metamaskSendHint') }}</p>
+              <p class="crypto-min-amount-tip">{{ t('deposit.minArrivalAmount', { amount: minDepositDisplay }) }}</p>
               <v-text-field
                 v-model="depositAmountStr"
                 :label="t('deposit.amountUsdc')"
@@ -317,7 +319,7 @@ import { getDepositAddress, collectDeposit } from '@/api/wallet'
 import { useUserStore } from '@/stores/user'
 import { useToastStore } from '@/stores/toast'
 import { ethers } from 'ethers'
-import { USDC_ADDRESS_BY_CHAIN } from '@/api/pmset'
+import { USDC_ADDRESS_BY_CHAIN, getDepositConfig, amountToUsdcDisplay } from '@/api/pmset'
 import {
   WALLET_PRIMARY_NETWORK_ID,
   useWalletNetworkGuard,
@@ -353,6 +355,23 @@ const connecting = ref(false)
 const depositAmountStr = ref('')
 const metamaskSendLoading = ref(false)
 const metamaskSendError = ref('')
+/** 最小到账金额（最小精度，默认 10U = 10_000_000） */
+const minDepositRaw = ref(10_000_000)
+const minDepositDisplay = computed(() => amountToUsdcDisplay(minDepositRaw.value))
+
+async function loadDepositConfig() {
+  try {
+    const res = await getDepositConfig()
+    if (res.code === 0 || res.code === 200) {
+      const raw = Number(res.data?.minDepositAmount ?? 0)
+      minDepositRaw.value = Number.isFinite(raw) && raw > 0 ? raw : 10_000_000
+      return
+    }
+  } catch (e) {
+    console.error('[loadDepositConfig]', e)
+  }
+  minDepositRaw.value = 10_000_000
+}
 
 const depositFooterWalletBtnRef = ref<ComponentPublicInstance | null>(null)
 const depositFooterCollectBtnRef = ref<ComponentPublicInstance | null>(null)
@@ -926,6 +945,10 @@ async function sendUsdcViaMetaMask() {
     metamaskSendError.value = t('deposit.invalidAmount')
     return
   }
+  if (amountWei < BigInt(minDepositRaw.value)) {
+    metamaskSendError.value = t('deposit.belowMinArrivalAmount', { amount: minDepositDisplay.value })
+    return
+  }
   if (!USDC_ADDRESS_BY_CHAIN[selectedNetwork.value]) {
     metamaskSendError.value = t('deposit.networkConfigError')
     return
@@ -1005,6 +1028,7 @@ watch(
       metamaskSendError.value = ''
       stopDepositCheck()
     } else {
+      void loadDepositConfig()
       if (step.value === 'crypto') fetchAddress()
     }
   },
@@ -1127,6 +1151,13 @@ onUnmounted(() => {
   padding-bottom: 0;
   align-items: center;
 }
+.crypto-min-amount-tip {
+  margin: 0 0 12px;
+  font-size: 0.8125rem;
+  font-weight: 500;
+  color: #374151;
+  line-height: 1.4;
+}
 .crypto-support-tip {
   font-size: 0.75rem;
   font-weight: 500;
diff --git a/src/locales/en.json b/src/locales/en.json
index 9e654d6..480efa3 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -494,7 +494,9 @@
     "txConfirmTimeout": "Transaction was submitted but not confirmed in time. Check it in your wallet or a block explorer.",
     "walletRpcIncomplete": "Your wallet returned incomplete transaction data. If issues persist, update MetaMask or change the RPC.",
     "depositHistory": "Deposit History",
-    "depositStatusAll": "All"
+    "depositStatusAll": "All",
+    "minArrivalAmount": "Minimum credit amount: {amount} USDC",
+    "belowMinArrivalAmount": "Deposit amount must be at least {amount} USDC"
   },
   "withdraw": {
     "title": "Withdraw",
@@ -548,4 +550,4 @@
     "ja": "日本語",
     "ko": "한국어"
   }
-}
+}
\ No newline at end of file
diff --git a/src/locales/ja.json b/src/locales/ja.json
index 39facc2..b109c7d 100644
--- a/src/locales/ja.json
+++ b/src/locales/ja.json
@@ -494,7 +494,9 @@
     "txConfirmTimeout": "トランザクションは送信されましたが、一定時間内に確認されませんでした。ウォレットまたはブロックエクスプローラーでご確認ください。",
     "walletRpcIncomplete": "ウォレットから返ったトランザクション情報が不完全です。MetaMask の更新や RPC の変更をお試しください。",
     "depositHistory": "入金履歴",
-    "depositStatusAll": "すべて"
+    "depositStatusAll": "すべて",
+    "minArrivalAmount": "最小着金金額：{amount} USDC",
+    "belowMinArrivalAmount": "入金額は {amount} USDC 以上である必要があります"
   },
   "withdraw": {
     "title": "出金",
@@ -548,4 +550,4 @@
     "ja": "日本語",
     "ko": "한국어"
   }
-}
+}
\ No newline at end of file
diff --git a/src/locales/ko.json b/src/locales/ko.json
index 75dd607..8c118b5 100644
--- a/src/locales/ko.json
+++ b/src/locales/ko.json
@@ -494,7 +494,9 @@
     "txConfirmTimeout": "거래는 제출되었지만 제한 시간 안에 확인되지 않았습니다. 지갑이나 블록 탐색기에서 확인해 주세요.",
     "walletRpcIncomplete": "지갑에서 반환된 거래 데이터가 불완전합니다. MetaMask를 업데이트하거나 RPC를 변경해 보세요.",
     "depositHistory": "입금 내역",
-    "depositStatusAll": "전체"
+    "depositStatusAll": "전체",
+    "minArrivalAmount": "최소 입금 금액: {amount} USDC",
+    "belowMinArrivalAmount": "입금 금액은 최소 {amount} USDC 이상이어야 합니다"
   },
   "withdraw": {
     "title": "출금",
@@ -548,4 +550,4 @@
     "ja": "日本語",
     "ko": "한국어"
   }
-}
+}
\ No newline at end of file
diff --git a/src/locales/zh-CN.json b/src/locales/zh-CN.json
index f871dee..29b6201 100644
--- a/src/locales/zh-CN.json
+++ b/src/locales/zh-CN.json
@@ -494,7 +494,9 @@
     "txConfirmTimeout": "交易已提交，但长时间未在链上确认，请在浏览器钱包或区块浏览器中查看该笔交易。",
     "walletRpcIncomplete": "钱包返回的交易数据不完整。已改为直连接口发交易；若仍失败请更新 MetaMask 或更换 RPC。",
     "depositHistory": "充值历史",
-    "depositStatusAll": "全部"
+    "depositStatusAll": "全部",
+    "minArrivalAmount": "最小到账金额：{amount} USDC",
+    "belowMinArrivalAmount": "充值金额不能低于 {amount} USDC"
   },
   "withdraw": {
     "title": "提现",
@@ -561,4 +563,4 @@
     "ja": "日本語",
     "ko": "한국어"
   }
-}
+}
\ No newline at end of file
diff --git a/src/locales/zh-TW.json b/src/locales/zh-TW.json
index 8a76d5e..fed6d3a 100644
--- a/src/locales/zh-TW.json
+++ b/src/locales/zh-TW.json
@@ -494,7 +494,9 @@
         "txConfirmTimeout": "交易已提交，但長時間未在鏈上確認，請在瀏覽器錢包或區塊瀏覽器中查看該筆交易。",
         "walletRpcIncomplete": "錢包回傳的交易資料不完整。已改為直接介面發送；若仍失敗請更新 MetaMask 或更換 RPC。",
         "depositHistory": "充值歷史",
-        "depositStatusAll": "全部"
+        "depositStatusAll": "全部",
+        "minArrivalAmount": "最小到帳金額：{amount} USDC",
+        "belowMinArrivalAmount": "充值金額不能低於 {amount} USDC"
     },
     "withdraw": {
         "title": "提現",