diff --git a/core/manager/src/devhost_service_clnt.c b/core/manager/src/devhost_service_clnt.c
index 03c5136dbf2d0cd5e4d0526af89d5980054bd2ce..5d9d52620913624674a2e2971b71e5a303590af4 100755
--- a/core/manager/src/devhost_service_clnt.c
+++ b/core/manager/src/devhost_service_clnt.c
@@ -62,7 +62,6 @@ int DevHostServiceClntInstallDriver(struct DevHostServiceClnt *hostClnt)
         }
         ret = devHostSvcIf->AddDevice(devHostSvcIf, deviceInfo);
         if (ret != HDF_SUCCESS) {
-            deviceInfo->preload = DEVICE_PRELOAD_DISABLE;
             HDF_LOGE("Install %s driver failed, ret = %d", deviceInfo->svcName, ret);
         }
     }
diff --git a/core/manager/src/devmgr_service.c b/core/manager/src/devmgr_service.c
index 2d0001aacd9962580edbd2a559aef69521d1d39c..d6d5d0c0d96130010557e61d85019f0a6325ab21 100755
--- a/core/manager/src/devmgr_service.c
+++ b/core/manager/src/devmgr_service.c
@@ -77,7 +77,7 @@ static int DevmgrServiceFindAndActiveDevice(const char *svcName, bool isLoad)
         HdfSListIteratorInit(&itDeviceInfo, hostClnt->deviceInfos);
         while (HdfSListIteratorHasNext(&itDeviceInfo)) {
             deviceInfo = (struct HdfDeviceInfo *)HdfSListIteratorNext(&itDeviceInfo);
-            if (strcmp(deviceInfo->svcName, svcName) == 0) {
+            if ((strcmp(deviceInfo->svcName, svcName) == 0) && (deviceInfo->preload == DEVICE_PRELOAD_DISABLE)) {
                 return DevmgrServiceActiveDevice(hostClnt, deviceInfo, isLoad);
             }
         }