diff --git a/internal/gateway/models.go b/internal/gateway/models.go
index 7fe2982..67c4428 100644
--- a/internal/gateway/models.go
+++ b/internal/gateway/models.go
@@ -123,7 +123,9 @@ type CardStatusReq struct {
 type CardStatusResp struct {
 	ICCID      string `json:"iccid" description:"ICCID"`
 	CardStatus string `json:"cardStatus" description:"卡状态（准备、正常、停机；仅正常表示开机）"`
-	Extend     string `json:"extend,omitempty" description:"扩展字段（广电国网特殊参数）"`
+	// IMEI 为插拔卡业务中网关上报的设备 IMEI，非设备自身 IMEI，仅用于数据同步落库，无业务使用
+	IMEI   string `json:"imei,omitempty" description:"插拔卡业务 IMEI（网关同步，无业务含义）"`
+	Extend string `json:"extend,omitempty" description:"扩展字段（广电国网特殊参数）"`
 }
 
 // FlowQueryReq 是查询流量使用的请求
diff --git a/internal/model/dto/iot_card_dto.go b/internal/model/dto/iot_card_dto.go
index 856f23e..a83726c 100644
--- a/internal/model/dto/iot_card_dto.go
+++ b/internal/model/dto/iot_card_dto.go
@@ -48,6 +48,7 @@ type StandaloneIotCardResponse struct {
 	NetworkStatus         int        `json:"network_status" description:"网络状态 (0:停机, 1:开机)"`
 	NetworkStatusName     string     `json:"network_status_name" description:"网络状态名称（中文）"`
 	GatewayExtend         string     `json:"gateway_extend" description:"Gateway 卡状态扩展字段，原样返回上游 extend，用于展示运营商侧实际停机原因"`
+	GatewayCardIMEI       string     `json:"gateway_card_imei" description:"插拔卡业务 IMEI（由 Gateway 卡状态接口同步，非设备自身 IMEI，无业务含义，仅供查看）"`
 	DataUsageMB           int64      `json:"data_usage_mb" description:"累计流量使用(MB)"`
 	CurrentMonthUsageMB   float64    `json:"current_month_usage_mb" description:"系统自然月累计流量(MB，不等于运营商周期口径)"`
 	LastGatewayReadingMB  float64    `json:"last_gateway_reading_mb" description:"运营商当前周期累计流量读数(MB，展示运营商口径时使用)"`
diff --git a/internal/model/iot_card.go b/internal/model/iot_card.go
index cc2c1a2..5ab6be0 100644
--- a/internal/model/iot_card.go
+++ b/internal/model/iot_card.go
@@ -55,6 +55,8 @@ type IotCard struct {
 	DeviceVirtualNo      string     `gorm:"column:device_virtual_no;type:varchar(100);not null;default:'';comment:绑定设备的虚拟号快照(未绑定时为空字符串)" json:"device_virtual_no"`
 	LastGatewayReadingMB float64    `gorm:"column:last_gateway_reading_mb;type:float;not null;default:0;comment:运营商当前周期累计流量读数(MB，来自网关)" json:"last_gateway_reading_mb"`
 	GatewayExtend        string     `gorm:"column:gateway_extend;type:text;not null;default:'';comment:Gateway 卡状态扩展字段，原样保存上游 extend，用于展示运营商侧实际停机原因" json:"gateway_extend"`
+	// GatewayCardIMEI 为插拔卡业务中网关上报的设备 IMEI，非设备自身 IMEI，仅用于数据同步落库
+	GatewayCardIMEI      string     `gorm:"column:gateway_card_imei;type:varchar(50);not null;default:'';comment:插拔卡业务 IMEI，网关卡状态接口同步，非设备 IMEI" json:"gateway_card_imei"`
 	RealnamePolicy       string     `gorm:"column:realname_policy;type:varchar(20);default:'after_order';not null;comment:实名认证策略(none=无需实名,before_order=先实名后充值/购买,after_order=先充值/购买后实名)" json:"realname_policy"`
 
 	// ICCID 双列存储，用于支持 19/20 位 ICCID 精确路由查询
diff --git a/internal/service/iot_card/service.go b/internal/service/iot_card/service.go
index 64658f8..3d29f46 100644
--- a/internal/service/iot_card/service.go
+++ b/internal/service/iot_card/service.go
@@ -377,6 +377,7 @@ func (s *Service) toStandaloneResponse(card *model.IotCard, shopMap map[uint]str
 		NetworkStatus:         card.NetworkStatus,
 		NetworkStatusName:     constants.GetNetworkStatusName(card.NetworkStatus),
 		GatewayExtend:         card.GatewayExtend,
+		GatewayCardIMEI:       card.GatewayCardIMEI,
 		DataUsageMB:           card.DataUsageMB,
 		CurrentMonthUsageMB:   card.CurrentMonthUsageMB,
 		LastGatewayReadingMB:  card.LastGatewayReadingMB,
diff --git a/internal/task/polling_cardstatus_handler.go b/internal/task/polling_cardstatus_handler.go
index dcc79dc..936c77f 100644
--- a/internal/task/polling_cardstatus_handler.go
+++ b/internal/task/polling_cardstatus_handler.go
@@ -67,6 +67,7 @@ func (h *PollingCardStatusHandler) Handle(ctx context.Context, t *asynq.Task) er
 	newNetworkStatus := card.NetworkStatus
 	gatewayCardStatus := ""
 	gatewayExtend := card.GatewayExtend
+	gatewayCardIMEI := ""
 	statusQueried := false
 	if h.gateway != nil {
 		result, gwErr := h.gateway.QueryCardStatus(ctx, &gateway.CardStatusReq{CardNo: card.ICCID})
@@ -78,6 +79,7 @@ func (h *PollingCardStatusHandler) Handle(ctx context.Context, t *asynq.Task) er
 		}
 		gatewayCardStatus = result.CardStatus
 		gatewayExtend = strings.TrimSpace(result.Extend)
+		gatewayCardIMEI = strings.TrimSpace(result.IMEI)
 		statusQueried = true
 		parsedStatus, ok := gateway.ParseCardNetworkStatus(result.CardStatus, gatewayExtend)
 		if !ok {
@@ -108,6 +110,9 @@ func (h *PollingCardStatusHandler) Handle(ctx context.Context, t *asynq.Task) er
 	if statusQueried {
 		fields["gateway_extend"] = gatewayExtend
 		fields["last_sync_time"] = now
+		if gatewayCardIMEI != "" {
+			fields["gateway_card_imei"] = gatewayCardIMEI
+		}
 	}
 	if statusChanged {
 		fields["network_status"] = newNetworkStatus