diff --git a/samgr/adapter/cmsis/thread_adapter.c b/samgr/adapter/cmsis/thread_adapter.c
index 0e0708d004087aaafccc4317b2940639f630811b..ae561685de8605724f2528ee3ae8e2c2fbba994c 100644
--- a/samgr/adapter/cmsis/thread_adapter.c
+++ b/samgr/adapter/cmsis/thread_adapter.c
@@ -16,7 +16,6 @@
 #include "common.h"
 #include <cmsis_os.h>
 
-extern void *osThreadGetArgument(void);
 
 MutexId MUTEX_InitValue()
 {
diff --git a/samgr_endpoint/source/samgr_mini_ipc_adapter.c b/samgr_endpoint/source/samgr_mini_ipc_adapter.c
index ae5e68c765fe9499a208d248b06efca15640aae3..57f31b5771dab2cb07e6c34dbd6cd866bd0513c5 100644
--- a/samgr_endpoint/source/samgr_mini_ipc_adapter.c
+++ b/samgr_endpoint/source/samgr_mini_ipc_adapter.c
@@ -31,7 +31,6 @@ int ClientRegisterRemoteEndpoint(SvcIdentity *identity, int token, const char *s
     identity->cookie = objectStubOne;
     // token is used by router index, should be itself, and save in SaNode
     identity->token = token;
-    extern int AddEndpoint(SvcIdentity identity, const char *service, const char *feature);
     return AddEndpoint(*identity, service, feature);
 }
 
@@ -42,7 +41,6 @@ void Listen(Endpoint *endpoint, int token, const char *service, const char *feat
 
 static int Dispatch(uint32_t code, IpcIo *data, IpcIo *reply, MessageOption option)
 {
-    extern RemoteRegister g_remoteRegister;
     Endpoint *endpoint = g_remoteRegister.endpoint;
     int token = GetRemoteToken(data);
     if (token == EC_INVALID) {