diff --git a/services/screentransport/screensourcetrans/include/screen_source_trans.h b/services/screentransport/screensourcetrans/include/screen_source_trans.h
index 667212b3459818258f1f25389995d114969b16f7..5add1de5a3651761aa48e0d4aa9cd85698a72e4b 100644
--- a/services/screentransport/screensourcetrans/include/screen_source_trans.h
+++ b/services/screentransport/screensourcetrans/include/screen_source_trans.h
@@ -76,6 +76,9 @@ private:
     sptr<Surface> encoderSurface_;
     std::queue<std::shared_ptr<DataBuffer>> dataQueue_;
 
+    int32_t sessionNum_ = 0;
+    std::mutex sessionNumMutex_;
+
     std::shared_ptr<IImageSourceProcessor> imageProcessor_;
     std::shared_ptr<IScreenChannel> screenChannel_;
     std::weak_ptr<IScreenSourceTransCallback> transCallback_;
diff --git a/services/screentransport/screensourcetrans/src/screen_source_trans.cpp b/services/screentransport/screensourcetrans/src/screen_source_trans.cpp
index 2ad9f920a308cc616a4b65d7e378f732641ae2f1..50929c1ab4b078f2620026540a6bd473ffcbfe16 100644
--- a/services/screentransport/screensourcetrans/src/screen_source_trans.cpp
+++ b/services/screentransport/screensourcetrans/src/screen_source_trans.cpp
@@ -60,6 +60,15 @@ int32_t ScreenSourceTrans::Release()
     }
     imageProcessor_ = nullptr;
 
+    {
+        std::lock_guard<std::mutex> sessionNumLock(sessionNumMutex_);
+        sessionNum_--;
+        if (sessionNum_ != 0) {
+            DHLOGI("%s: opened session number is %d.", LOG_TAG, sessionNum_);
+            return DH_SUCCESS;
+        }
+    }
+
     StartTrace(DSCREEN_HITRACE_LABEL, DSCREEN_SOURCE_RELEASE_SESSION_START);
     ret = screenChannel_->ReleaseSession();
     FinishTrace(DSCREEN_HITRACE_LABEL);
@@ -92,6 +101,11 @@ int32_t ScreenSourceTrans::Start()
         return ret;
     }
 
+    {
+        std::lock_guard<std::mutex> sessionNumLock(sessionNumMutex_);
+        sessionNum_++;
+    }
+
     DHLOGI("%s: Wait for channel session opened.", LOG_TAG);
     std::unique_lock<std::mutex> lck(sessionMtx_);
     auto status =