diff --git a/openspec/changes/update-card-gateway-imei-display/proposal.md b/openspec/changes/update-card-gateway-imei-display/proposal.md
new file mode 100644
index 0000000..fef3f63
--- /dev/null
+++ b/openspec/changes/update-card-gateway-imei-display/proposal.md
@@ -0,0 +1,41 @@
+# Change: 补充 IoT 卡网关 IMEI 展示
+
+## Why
+
+后端新增了 `gateway_card_imei` 字段，但后台当前还没有完整消费这组返回：
+
+- `GET /api/admin/iot-cards/standalone` 已为 IoT 卡列表返回 `gateway_card_imei`
+- `GET /api/admin/assets/resolve/:identifier` 已可为卡资产详情返回 `gateway_card_imei`
+- `GET /api/admin/assets/:identifier/realtime-status` 也可返回 `gateway_card_imei`
+
+如果前端不补齐这部分契约与展示规范，运营人员无法在 IoT 卡列表和卡资产详情中稳定查看对应 IMEI，也无法在资产详情首个接口缺值时回退到实时状态结果。
+
+## What Changes
+
+- 为 `iot-card-management` 新增 `gateway_card_imei` 列展示规范：
+  - IoT 卡管理列表新增 `IMEI` 列
+  - 列值直接展示 `GET /api/admin/iot-cards/standalone` 返回的 `gateway_card_imei`
+  - 当字段为空时显示 `-`
+- 为 `asset-information` 新增卡资产 `gateway_card_imei` 契约与展示规范：
+  - 仅卡资产详情在“卡信息”区域新增 `IMEI` 展示项
+  - 优先使用 `GET /api/admin/assets/resolve/:identifier` 返回的 `gateway_card_imei`
+  - 仅当详情响应未返回有效 `gateway_card_imei` 时，回退使用 `GET /api/admin/assets/:identifier/realtime-status`
+  - 当两个接口都没有有效值时显示 `-`
+  - 设备资产详情不新增该字段展示
+
+## Impact
+
+- Affected specs:
+  - `iot-card-management`
+  - `asset-information`
+- Affected code:
+  - `src/types/api/card.ts`
+  - `src/views/asset-management/iot-card-management/index.vue`
+  - `src/types/api/asset.ts`
+  - `src/views/asset-management/asset-information/types.ts`
+  - `src/views/asset-management/asset-information/composables/useAssetInfo.ts`
+  - `src/views/asset-management/asset-information/components/BasicInfoCard.vue`
+- Dependencies:
+  - `GET /api/admin/iot-cards/standalone`
+  - `GET /api/admin/assets/resolve/:identifier`
+  - `GET /api/admin/assets/:identifier/realtime-status`
diff --git a/openspec/changes/update-card-gateway-imei-display/specs/asset-information/spec.md b/openspec/changes/update-card-gateway-imei-display/specs/asset-information/spec.md
new file mode 100644
index 0000000..4b24468
--- /dev/null
+++ b/openspec/changes/update-card-gateway-imei-display/specs/asset-information/spec.md
@@ -0,0 +1,46 @@
+## ADDED Requirements
+
+### Requirement: Admin Card Asset Gateway IMEI Contract
+
+The admin asset information integration SHALL accept and preserve `gateway_card_imei` for card assets, using the asset detail response as the primary source and the realtime-status response only as a fallback.
+
+#### Scenario: Card asset detail preserves gateway_card_imei from resolve
+
+- **GIVEN** 用户正在查看后台“资产信息”中的卡资产详情
+- **AND** `GET /api/admin/assets/resolve/:identifier` 返回了有效 `gateway_card_imei`
+- **WHEN** 前端解析卡资产详情响应
+- **THEN** 页面状态 MUST 保留该 `gateway_card_imei`
+- **AND** 后续展示 MUST 优先使用该详情值
+
+#### Scenario: Card asset detail falls back to realtime-status when resolve lacks gateway_card_imei
+
+- **GIVEN** 用户正在查看后台“资产信息”中的卡资产详情
+- **AND** `GET /api/admin/assets/resolve/:identifier` 未返回有效 `gateway_card_imei`
+- **AND** `GET /api/admin/assets/:identifier/realtime-status` 返回了有效 `gateway_card_imei`
+- **WHEN** 前端合并实时状态到当前卡资产详情状态
+- **THEN** 页面状态 MUST 使用 realtime-status 返回的 `gateway_card_imei` 作为回退值
+
+### Requirement: Admin Card Asset Gateway IMEI Display
+
+The admin asset information view SHALL display `gateway_card_imei` as `IMEI` only within the card asset `卡信息` section.
+
+#### Scenario: Show gateway_card_imei in card information
+
+- **GIVEN** 用户正在查看后台“资产信息”中的卡资产详情
+- **AND** 当前卡资产详情状态中存在有效 `gateway_card_imei`
+- **WHEN** 页面渲染“卡信息”区域
+- **THEN** 页面 MUST 提供 `IMEI` 展示项
+- **AND** 展示内容 MUST 与当前状态中的 `gateway_card_imei` 保持一致
+
+#### Scenario: Show placeholder when no gateway_card_imei is available
+
+- **GIVEN** 用户正在查看后台“资产信息”中的卡资产详情
+- **AND** `GET /api/admin/assets/resolve/:identifier` 与 `GET /api/admin/assets/:identifier/realtime-status` 都未返回有效 `gateway_card_imei`
+- **WHEN** 页面渲染“卡信息”区域中的 `IMEI`
+- **THEN** 页面 MUST 显示 `-`
+
+#### Scenario: Device asset detail does not render gateway_card_imei
+
+- **GIVEN** 用户正在查看后台“资产信息”中的设备资产详情
+- **WHEN** 页面渲染设备基础信息区域
+- **THEN** 页面 MUST NOT 因 `gateway_card_imei` 新增 `IMEI` 展示项
diff --git a/openspec/changes/update-card-gateway-imei-display/specs/iot-card-management/spec.md b/openspec/changes/update-card-gateway-imei-display/specs/iot-card-management/spec.md
new file mode 100644
index 0000000..2d4f2c0
--- /dev/null
+++ b/openspec/changes/update-card-gateway-imei-display/specs/iot-card-management/spec.md
@@ -0,0 +1,20 @@
+## ADDED Requirements
+
+### Requirement: IoT Card Management Gateway IMEI Column
+
+The IoT card management page SHALL display `gateway_card_imei` from `GET /api/admin/iot-cards/standalone` as an `IMEI` column in the list.
+
+#### Scenario: Show IMEI when standalone list returns gateway_card_imei
+
+- **GIVEN** 用户正在使用 IoT 卡管理列表
+- **AND** `GET /api/admin/iot-cards/standalone` 返回的某条卡记录包含 `gateway_card_imei`
+- **WHEN** 页面渲染列表行数据
+- **THEN** 页面 MUST 提供 `IMEI` 列
+- **AND** 对应行 MUST 直接展示该条记录返回的 `gateway_card_imei`
+
+#### Scenario: Show placeholder when gateway_card_imei is missing
+
+- **GIVEN** 用户正在使用 IoT 卡管理列表
+- **AND** `GET /api/admin/iot-cards/standalone` 返回的某条卡记录未返回有效 `gateway_card_imei`
+- **WHEN** 页面渲染该列表行
+- **THEN** 该行的 `IMEI` 列 MUST 显示 `-`
diff --git a/openspec/changes/update-card-gateway-imei-display/tasks.md b/openspec/changes/update-card-gateway-imei-display/tasks.md
new file mode 100644
index 0000000..c2a8fee
--- /dev/null
+++ b/openspec/changes/update-card-gateway-imei-display/tasks.md
@@ -0,0 +1,18 @@
+## 1. Contract And State
+
+- [x] 1.1 扩展 IoT 卡列表类型契约，支持 `gateway_card_imei` 并在列表数据映射中保留该字段。
+- [x] 1.2 扩展卡资产详情与实时状态相关类型契约，支持 `gateway_card_imei`。
+- [x] 1.3 调整卡资产详情状态合并逻辑，确保优先使用 `resolve` 返回值，仅在其缺失时回退到 `realtime-status` 返回值。
+
+## 2. UI
+
+- [x] 2.1 在 IoT 卡管理列表新增 `IMEI` 列，展示 `gateway_card_imei`，空值显示 `-`。
+- [x] 2.2 在卡资产详情“卡信息”区域新增 `IMEI` 展示项，按 `resolve -> realtime-status -> -` 的顺序取值。
+- [x] 2.3 确认设备资产详情不因 `gateway_card_imei` 新增任何基础信息展示项。
+
+## 3. Verification
+
+- [ ] 3.1 验证 `GET /api/admin/iot-cards/standalone` 返回 `gateway_card_imei` 时，IoT 卡列表 `IMEI` 列展示正确。
+- [ ] 3.2 验证卡资产详情在 `GET /api/admin/assets/resolve/:identifier` 返回 `gateway_card_imei` 时，页面优先展示该值。
+- [ ] 3.3 验证卡资产详情在 `resolve` 未返回有效值、但 `GET /api/admin/assets/:identifier/realtime-status` 返回 `gateway_card_imei` 时，页面回退展示实时值。
+- [ ] 3.4 验证两个资产接口都未返回有效 `gateway_card_imei` 时，卡资产详情显示 `-`，且设备资产详情不展示该字段。
diff --git a/src/types/api/asset.ts b/src/types/api/asset.ts
index 8014be3..185f81d 100644
--- a/src/types/api/asset.ts
+++ b/src/types/api/asset.ts
@@ -89,6 +89,7 @@ export interface AssetResolveResponse {
   supplier?: string // 供应商
   activation_status?: number // 激活状态
   enable_polling?: boolean // 是否参与轮询
+  gateway_card_imei?: string // Gateway 返回的卡 IMEI
   gateway_extend?: string // Gateway 卡状态扩展字段，原样返回上游 extend
 
   // ===== 设备专属字段 (asset_type === 'device' 时) =====
@@ -181,6 +182,7 @@ export interface AssetRealtimeStatusResponse {
   network_status?: NetworkStatus // 网络状态（仅 card）
   real_name_status?: RealNameStatus // 实名状态（仅 card）
   realname_policy?: string // 实名认证策略（仅 card）
+  gateway_card_imei?: string // Gateway 返回的卡 IMEI
   current_month_usage_mb?: number // 本月已用流量 MB（仅 card）
   last_gateway_reading_mb?: number // 运营商周期月内已用流量 MB（仅 card）
   last_sync_time?: string | null // 最后同步时间（仅 card）
diff --git a/src/types/api/card.ts b/src/types/api/card.ts
index 82bb6e2..1b4a511 100644
--- a/src/types/api/card.ts
+++ b/src/types/api/card.ts
@@ -353,6 +353,7 @@ export interface StandaloneCardQueryParams extends PaginationParams {
 
 // 单卡信息
 export interface StandaloneIotCard {
+  gateway_card_imei?: string // 网关侧返回的卡 IMEI（可空）
   id: number // 卡ID
   iccid: string // ICCID
   imsi?: string // IMSI (可选)
diff --git a/src/views/asset-management/asset-information/components/BasicInfoCard.vue b/src/views/asset-management/asset-information/components/BasicInfoCard.vue
index 4923d62..2570452 100644
--- a/src/views/asset-management/asset-information/components/BasicInfoCard.vue
+++ b/src/views/asset-management/asset-information/components/BasicInfoCard.vue
@@ -29,6 +29,7 @@
       <!-- 卡专属字段 -->
       <template v-if="cardInfo?.asset_type === 'card'">
         <ElDescriptionsItem label="ICCID">{{ cardInfo?.iccid || '-' }}</ElDescriptionsItem>
+        <ElDescriptionsItem label="IMEI">{{ cardInfo?.gateway_card_imei || '-' }}</ElDescriptionsItem>
         <ElDescriptionsItem label="运营商账户">{{
           cardInfo?.carrier_name || '-'
         }}</ElDescriptionsItem>
@@ -521,6 +522,7 @@
     series_name?: string
     real_name_at?: string | null
     supplier?: string
+    gateway_card_imei?: string
     gateway_extend?: string
     last_sync_time?: string | null
     last_data_check_at?: string | null
diff --git a/src/views/asset-management/asset-information/composables/useAssetInfo.ts b/src/views/asset-management/asset-information/composables/useAssetInfo.ts
index 11d0b2d..88d8875 100644
--- a/src/views/asset-management/asset-information/composables/useAssetInfo.ts
+++ b/src/views/asset-management/asset-information/composables/useAssetInfo.ts
@@ -20,6 +20,9 @@ type TrafficDisplaySource = {
   enable_virtual_data?: boolean | null
 }
 
+const normalizeOptionalText = (value?: string | null) =>
+  typeof value === 'string' ? value.trim() : ''
+
 const NULLABLE_REALTIME_CARD_FIELDS = new Set([
   'last_data_check_at',
   'last_real_name_check_at',
@@ -92,6 +95,7 @@ export function useAssetInfo() {
 
       if (response.code === 0 && response.data) {
         const data = response.data
+        const resolvedGatewayCardImei = normalizeOptionalText(data.gateway_card_imei)
 
         // 获取资产标识符
         const assetIdentifier = data.asset_type === 'card' ? data.iccid : data.virtual_no
@@ -128,6 +132,8 @@ export function useAssetInfo() {
           carrier_name: data.carrier_name || '',
           supplier: data.supplier || '',
           network_status: data.network_status,
+          gateway_card_imei: resolvedGatewayCardImei,
+          resolved_gateway_card_imei: resolvedGatewayCardImei,
           gateway_extend: data.gateway_extend ?? '',
           bound_device_id: data.bound_device_id,
           bound_device_no: data.bound_device_no || '',
@@ -307,6 +313,13 @@ export function useAssetInfo() {
           if (data.real_name_status !== undefined) {
             cardInfo.value.real_name_status = data.real_name_status
           }
+          if ('gateway_card_imei' in data) {
+            const resolvedGatewayCardImei = normalizeOptionalText(
+              cardInfo.value?.resolved_gateway_card_imei
+            )
+            cardInfo.value.gateway_card_imei =
+              resolvedGatewayCardImei || normalizeOptionalText(data.gateway_card_imei)
+          }
           if (data.last_sync_time !== undefined) {
             cardInfo.value.last_sync_time = data.last_sync_time
           }
diff --git a/src/views/asset-management/asset-information/types.ts b/src/views/asset-management/asset-information/types.ts
index 2223046..81672b5 100644
--- a/src/views/asset-management/asset-information/types.ts
+++ b/src/views/asset-management/asset-information/types.ts
@@ -28,6 +28,7 @@ export interface AssetInfo {
   sn?: string
   cards?: BindingCard[]
   status?: number
+  gateway_card_imei?: string
   gateway_extend?: string
   last_sync_time?: string | null
   last_data_check_at?: string | null
diff --git a/src/views/asset-management/iot-card-management/index.vue b/src/views/asset-management/iot-card-management/index.vue
index f649bff..439faff 100644
--- a/src/views/asset-management/iot-card-management/index.vue
+++ b/src/views/asset-management/iot-card-management/index.vue
@@ -1094,6 +1094,7 @@ const formItems: SearchFormItem[] = baseFormItems
 // 列配置
 const columnOptions = [
   { label: 'ICCID', prop: 'iccid' },
+  { label: 'IMEI', prop: 'gateway_card_imei' },
   { label: 'MSISDN', prop: 'msisdn' },
   { label: '卡虚拟号', prop: 'virtual_no' },
   { label: '运营商', prop: 'carrier_name' },
@@ -1226,6 +1227,13 @@ const { columnChecks, columns } = useCheckedColumns(() => [
       )
     }
   },
+  {
+    prop: 'gateway_card_imei',
+    label: 'IMEI',
+    width: 180,
+    showOverflowTooltip: true,
+    formatter: (row: StandaloneIotCard) => row.gateway_card_imei || '-'
+  },
   {
     prop: 'msisdn',
     label: 'MSISDN',