diff --git a/openspec/changes/update-payment-merchant-pool-response-display/proposal.md b/openspec/changes/update-payment-merchant-pool-response-display/proposal.md
new file mode 100644
index 0000000..96828c5
--- /dev/null
+++ b/openspec/changes/update-payment-merchant-pool-response-display/proposal.md
@@ -0,0 +1,11 @@
+# Change: 补齐支付商户池新增响应字段展示
+
+## Why
+
+支付商户池接口新增启用成员数、当前命中商户和最近失败调查字段，前端类型及列表/详情尚未完整展示。
+
+## What Changes
+
+- 扩展商户池响应类型。
+- 商户池列表和详情展示新增运行状态与最近失败字段。
+- 保持现有代理充值新增参数在列表和详情中的展示。
diff --git a/openspec/changes/update-payment-merchant-pool-response-display/specs/payment-merchant-pool/spec.md b/openspec/changes/update-payment-merchant-pool-response-display/specs/payment-merchant-pool/spec.md
new file mode 100644
index 0000000..1661035
--- /dev/null
+++ b/openspec/changes/update-payment-merchant-pool-response-display/specs/payment-merchant-pool/spec.md
@@ -0,0 +1,10 @@
+## ADDED Requirements
+
+### Requirement: Payment Merchant Pool Runtime Fields
+
+The merchant pool list and detail pages SHALL display enabled member count, total member count, current routed merchant, and the latest failure investigation fields returned by the backend.
+
+#### Scenario: Display pool runtime information
+
+- **WHEN** the pool list or detail response contains runtime fields
+- **THEN** the frontend MUST display them without deriving values from stale member data
diff --git a/openspec/changes/update-payment-merchant-pool-response-display/tasks.md b/openspec/changes/update-payment-merchant-pool-response-display/tasks.md
new file mode 100644
index 0000000..97730d2
--- /dev/null
+++ b/openspec/changes/update-payment-merchant-pool-response-display/tasks.md
@@ -0,0 +1,9 @@
+## 1. Implementation
+
+- [x] 1.1 扩展商户池类型。
+- [x] 1.2 更新商户池列表和详情字段。
+- [x] 1.3 校验代理充值列表/详情新增字段展示。
+
+## 2. Verification
+
+- [x] 2.1 运行类型检查、lint、构建和 OpenSpec 校验。
diff --git a/src/types/api/paymentMerchantPools.ts b/src/types/api/paymentMerchantPools.ts
index 5ac9351..aacc747 100644
--- a/src/types/api/paymentMerchantPools.ts
+++ b/src/types/api/paymentMerchantPools.ts
@@ -85,6 +85,10 @@ export interface PaymentMerchantPool {
   name: string
   payment_method: PaymentMerchantMethod
   member_ids: number[]
+  member_count?: number
+  enabled_member_count?: number
+  current_merchant_id?: number | null
+  current_merchant_name?: string | null
   enabled: boolean
   strategy: PaymentPoolStrategy
   statistic_cycle: PaymentStatisticCycle
@@ -97,6 +101,11 @@ export interface PaymentMerchantPool {
   remark: string
   created_at: string
   updated_at: string
+  last_failure_merchant_id?: number | null
+  last_failure_payment_id?: number | null
+  last_failure_payment_no?: string | null
+  last_failure_reason?: string | null
+  last_failure_at?: string | null
 }
 
 export interface PaymentMerchantPoolQueryParams extends PaginationParams {
diff --git a/src/views/settings/payment-merchant-pools/components/PoolManagement.vue b/src/views/settings/payment-merchant-pools/components/PoolManagement.vue
index 0f7723d..c62ba45 100644
--- a/src/views/settings/payment-merchant-pools/components/PoolManagement.vue
+++ b/src/views/settings/payment-merchant-pools/components/PoolManagement.vue
@@ -286,7 +286,8 @@
           ? h(
               'span',
               {
-                style: 'color: var(--el-color-primary); cursor: pointer; text-decoration: underline;',
+                style:
+                  'color: var(--el-color-primary); cursor: pointer; text-decoration: underline;',
                 onClick: (event: MouseEvent) => {
                   event.stopPropagation()
                   handleNameClick(row)
@@ -306,7 +307,22 @@
       label: '成员数量',
       prop: 'member_ids',
       width: 110,
-      formatter: (row: PaymentMerchantPool) => `${row.member_ids.length} 个`
+      formatter: (row: PaymentMerchantPool) =>
+        `${row.enabled_member_count ?? '-'} / ${row.member_count ?? row.member_ids.length}`
+    },
+    {
+      label: '当前命中商户',
+      prop: 'current_merchant_name',
+      minWidth: 150,
+      showOverflowTooltip: true,
+      formatter: (row: PaymentMerchantPool) => row.current_merchant_name || '-'
+    },
+    {
+      label: '最近失败原因',
+      prop: 'last_failure_reason',
+      minWidth: 180,
+      showOverflowTooltip: true,
+      formatter: (row: PaymentMerchantPool) => row.last_failure_reason || '-'
     },
     {
       label: '启停状态',
diff --git a/src/views/settings/payment-merchant-pools/pool-detail.vue b/src/views/settings/payment-merchant-pools/pool-detail.vue
index cef793a..8042fa3 100644
--- a/src/views/settings/payment-merchant-pools/pool-detail.vue
+++ b/src/views/settings/payment-merchant-pools/pool-detail.vue
@@ -103,7 +103,8 @@
       },
       {
         label: '成员数量',
-        formatter: (_, data) => `${(data.member_ids || []).length} 个`
+        formatter: (_, data) =>
+          `${data.enabled_member_count ?? '-'} / ${data.member_count ?? (data.member_ids || []).length}`
       },
       {
         label: '成员商户',
@@ -165,7 +166,19 @@
     if (!data) return []
 
     const fields: DetailField[] = [
-      { label: '路由世代', formatter: (_, row) => `v${row.routing_epoch}` }
+      { label: '路由世代', formatter: (_, row) => `v${row.routing_epoch}` },
+      { label: '当前命中商户', formatter: (_, row) => row.current_merchant_name || '-' },
+      { label: '最近失败商户ID', formatter: (_, row) => row.last_failure_merchant_id || '-' },
+      { label: '最近失败支付单号', formatter: (_, row) => row.last_failure_payment_no || '-' },
+      {
+        label: '最近失败原因',
+        formatter: (_, row) => row.last_failure_reason || '-',
+        fullWidth: true
+      },
+      {
+        label: '最近失败时间',
+        formatter: (_, row) => (row.last_failure_at ? formatDateTime(row.last_failure_at) : '-')
+      }
     ]
 
     if (data.created_at) {