diff --git a/interfaces/ipc/include/distributed_input_source_stub.h b/interfaces/ipc/include/distributed_input_source_stub.h
index 75484f0..5df3b2c 100644
--- a/interfaces/ipc/include/distributed_input_source_stub.h
+++ b/interfaces/ipc/include/distributed_input_source_stub.h
@@ -18,8 +18,9 @@
 
 #include "i_distributed_source_input.h"
 
-#include <iostream>
 #include <atomic>
+#include <iostream>
+#include <mutex>
 
 #include "iremote_stub.h"
 
@@ -59,7 +60,8 @@ private:
     int32_t HandleUnregisterSimulationEventListener(MessageParcel &data, MessageParcel &reply);
     DISALLOW_COPY_AND_MOVE(DistributedInputSourceStub);
 private:
-    std::atomic<bool> sourceInitFlag_ {false};
+    std::atomic<bool> sourceManagerInitFlag_ {false};
+    std::mutex sourceManagerReleaseMutex_;
 };
 } // namespace DistributedInput
 } // namespace DistributedHardware
diff --git a/interfaces/ipc/src/distributed_input_source_stub.cpp b/interfaces/ipc/src/distributed_input_source_stub.cpp
index 7a830ef..16d1984 100644
--- a/interfaces/ipc/src/distributed_input_source_stub.cpp
+++ b/interfaces/ipc/src/distributed_input_source_stub.cpp
@@ -31,7 +31,7 @@ DistributedInputSourceStub::~DistributedInputSourceStub()
 
 int32_t DistributedInputSourceStub::HandleInitDistributedHardware(MessageParcel &reply)
 {
-    if (sourceInitFlag_.load()) {
+    if (sourceManagerInitFlag_.load()) {
         DHLOGE("DistributedInputSourceStub already init.");
         return DH_SUCCESS;
     }
@@ -40,12 +40,13 @@ int32_t DistributedInputSourceStub::HandleInitDistributedHardware(MessageParcel
         DHLOGE("DistributedInputSourceStub Init write ret failed");
         return ERR_DH_INPUT_IPC_WRITE_TOKEN_VALID_FAIL;
     }
-    sourceInitFlag_.store(true);
+    sourceManagerInitFlag_.store(true);
     return DH_SUCCESS;
 }
 
 int32_t DistributedInputSourceStub::HandleReleaseDistributedHardware(MessageParcel &reply)
 {
+    std::unique_lock<std::mutex> lock(sourceManagerReleaseMutex_);
     int32_t ret = Release();
     if (!reply.WriteInt32(ret)) {
         DHLOGE("DistributedInputSourceStub release write ret failed");