diff --git a/adapter/uhdf2/host/devhost.c b/adapter/uhdf2/host/devhost.c
index 0e782eda62c1743ba80dc90af9abd9a31bdbc879..48c7e2d086c4ebd7c374a435c7366c64b07baba2 100644
--- a/adapter/uhdf2/host/devhost.c
+++ b/adapter/uhdf2/host/devhost.c
@@ -157,6 +157,7 @@ static void SetHostProperties(int argc, char **argv, const char *hostName)
     }
 }
 
+struct IDevHostService *g_instance = NULL;
 int main(int argc, char **argv)
 {
     if (argc < DEVHOST_MIN_INPUT_PARAM_NUM) {
@@ -173,6 +174,7 @@ int main(int argc, char **argv)
     HDF_LOGI("hdf device host %{public}s %{public}d start", hostName, hostId);
     SetHostProperties(argc, argv, hostName);
     struct IDevHostService *instance = DevHostServiceNewInstance(hostId, hostName);
+    g_instance = instance;
     if (instance == NULL || instance->StartService == NULL) {
         HDF_LOGE("DevHostServiceGetInstance fail");
         return HDF_ERR_INVALID_OBJECT;
@@ -202,3 +204,10 @@ int main(int argc, char **argv)
     }
     return status;
 }
+
+__attribute__((destructor)) void ReleaseInstance()
+{
+    if (g_instance != NULL) {
+        DevHostServiceFreeInstance(g_instance);
+    }
+}