diff --git a/internal/service/iot_card/stop_resume_service.go b/internal/service/iot_card/stop_resume_service.go
index 4e7f7e1..a0b9f3d 100644
--- a/internal/service/iot_card/stop_resume_service.go
+++ b/internal/service/iot_card/stop_resume_service.go
@@ -659,9 +659,11 @@ func (s *StopResumeService) resumeCardWithRetry(ctx context.Context, card *model
 			time.Sleep(s.retryInterval)
 		}
 
-		err := s.gatewayClient.StartCard(ctx, &gateway.CardOperationReq{
-			CardNo: card.ICCID,
-		})
+		req := &gateway.CardOperationReq{CardNo: card.ICCID}
+		if strings.TrimSpace(card.GatewayExtend) == constants.GatewayCardExtendMachineSeparated {
+			req.Extend = constants.GatewayCardStartExtendMachineSeparated
+		}
+		err := s.gatewayClient.StartCard(ctx, req)
 		if err == nil {
 			s.logger.Info("网关复机成功",
 				zap.Uint("card_id", card.ID),
diff --git a/pkg/constants/iot.go b/pkg/constants/iot.go
index b24c2bf..0671fab 100644
--- a/pkg/constants/iot.go
+++ b/pkg/constants/iot.go
@@ -62,6 +62,7 @@ const (
 	GatewayCardStatusStopped           = "停机"     // 网关卡状态：停机
 	GatewayCardExtendPendingActivation = "待激活"    // 网关扩展状态：待激活
 	GatewayCardExtendMachineSeparated  = "机卡分离停机" // 网关扩展状态：机卡分离停机
+	GatewayCardStartExtendMachineSeparated = "2"         // 机卡分离复机时上传给运营商的 extend 值
 )
 
 // IoT 卡停机原因