diff --git a/APP_Framework/Framework/transform_layer/rtthread/transform.c b/APP_Framework/Framework/transform_layer/rtthread/transform.c
index 661babf8f..71421046c 100644
--- a/APP_Framework/Framework/transform_layer/rtthread/transform.c
+++ b/APP_Framework/Framework/transform_layer/rtthread/transform.c
@@ -67,7 +67,10 @@ int PrivSemaphoreAbandon(sem_t *sem)
 {
     return sem_post(sem);
 }
-
+int PrivSemaphoreObtainWaitForever(sem_t *sem)
+{
+    return sem_wait(sem);
+}
 /**************************task*************************/
 int PrivTaskCreate(pthread_t *thread, const pthread_attr_t *attr,
                    void *(*start_routine)(void *), void *arg)
diff --git a/APP_Framework/Framework/transform_layer/rtthread/transform.h b/APP_Framework/Framework/transform_layer/rtthread/transform.h
index 786302911..df37a48ee 100644
--- a/APP_Framework/Framework/transform_layer/rtthread/transform.h
+++ b/APP_Framework/Framework/transform_layer/rtthread/transform.h
@@ -173,6 +173,7 @@ int PrivSemaphoreDelete(sem_t *sem);
 int PrivSemaphoreObtainWait(sem_t *sem, const struct timespec *abstime);
 int PrivSemaphoreObtainNoWait(sem_t *sem);
 int PrivSemaphoreAbandon(sem_t *sem);
+int PrivSemaphoreObtainWaitForever(sem_t *sem);
 int32_t PrivSemaphoreSetValue(int32_t sem, uint16_t val);
 
 /*********************task**************************/