diff --git a/adapter/uhdf2/host/test/unittest/devhost_test.cpp b/adapter/uhdf2/host/test/unittest/devhost_test.cpp
index a249d4814f6be6492436aff03d54d1cc9340a23e..727025bb073bce8bacf12e5ab8bd536f651d0c3f 100644
--- a/adapter/uhdf2/host/test/unittest/devhost_test.cpp
+++ b/adapter/uhdf2/host/test/unittest/devhost_test.cpp
@@ -78,7 +78,7 @@ HWTEST_F(DevHostTest, DevHostDevMgrServiceProxyTest, TestSize.Level1)
     ASSERT_TRUE(ret != HDF_SUCCESS);
     const char *name = "test_svcName";
     ret = instance->LoadDevice(instance, name);
-    ASSERT_TRUE(ret == HDF_SUCCESS);
+    ASSERT_TRUE(ret != HDF_SUCCESS);
 
     struct DevmgrServiceProxy *proxy = reinterpret_cast<struct DevmgrServiceProxy *>(object);
     HdfRemoteServiceRecycle(proxy->remote);
diff --git a/adapter/uhdf2/host/test/unittest/devmgr_test.cpp b/adapter/uhdf2/host/test/unittest/devmgr_test.cpp
index 26a906a6ccb42d1ca4ad7ef86da29ae561575cc8..b9dd7a114da79ac2694680245285c3da890cdd03 100644
--- a/adapter/uhdf2/host/test/unittest/devmgr_test.cpp
+++ b/adapter/uhdf2/host/test/unittest/devmgr_test.cpp
@@ -104,7 +104,7 @@ HWTEST_F(DevMgrTest, DriverUnLoaderTest, TestSize.Level1)
     ASSERT_TRUE(devmgr != nullptr);
 
     int ret = devmgr->UnloadDevice(devmgr, TEST_SERVICE_NAME);
-    ASSERT_EQ(ret, HDF_SUCCESS);
+    ASSERT_TRUE(ret != HDF_SUCCESS);
 
     uint32_t cnt = 0;
     struct HdfRemoteService *sampleService = servmgr->GetService(servmgr, TEST_SERVICE_NAME);
diff --git a/adapter/uhdf2/manager/src/devmgr_service_stub.c b/adapter/uhdf2/manager/src/devmgr_service_stub.c
index 7cb72a92849e5017aec8605091d1ebf83e303592..7eaa093f8a0803a0880d0d1a36f2b9f16dc07d6a 100644
--- a/adapter/uhdf2/manager/src/devmgr_service_stub.c
+++ b/adapter/uhdf2/manager/src/devmgr_service_stub.c
@@ -197,7 +197,7 @@ int32_t DevmgrServiceStubDispatch(struct HdfRemoteService *stub, int code, struc
         HDF_LOGE("%{public}s devmgr service stub dispach failed, cmd id is %{public}d, ret = %{public}d", __func__,
             code, ret);
     }
-    return HDF_SUCCESS;
+    return ret;
 }
 
 // LCOV_EXCL_START
diff --git a/framework/core/manager/src/devmgr_service.c b/framework/core/manager/src/devmgr_service.c
index fe66b391f4ad6ce66dbf9261e9403c7a8242d275..aae42ba578c7f56eb801c94ed717df602c192997 100644
--- a/framework/core/manager/src/devmgr_service.c
+++ b/framework/core/manager/src/devmgr_service.c
@@ -51,7 +51,7 @@ static bool DevmgrServiceDynamicDevInfoFound(
     return false;
 }
 
-#define WAIT_HOST_SLEEP_TIME    1 // ms
+#define WAIT_HOST_SLEEP_TIME    2 // ms
 #define WAIT_HOST_SLEEP_CNT     1000
 static int DevmgrServiceStartHostProcess(struct DevHostServiceClnt *hostClnt, bool sync, bool dynamic)
 {
@@ -79,6 +79,9 @@ static int DevmgrServiceStartHostProcess(struct DevHostServiceClnt *hostClnt, bo
 
     if (waitCount <= 0) {
         HDF_LOGE("wait host(%{public}s, %{public}d) attach timeout", hostClnt->hostName, hostClnt->hostId);
+        if (installer->StopDeviceHost != NULL) {
+            installer->StopDeviceHost(hostClnt->hostId, hostClnt->hostName);
+        }
         hostClnt->hostPid = -1;
         return HDF_ERR_TIMEOUT;
     }