diff --git a/services/src/client_info.cpp b/services/src/client_info.cpp
index f70d9e6d56e7e228249132721fcd610637c33749..4f9b6daa03348e4ff30a7b8748a23b2b4a1af903 100644
--- a/services/src/client_info.cpp
+++ b/services/src/client_info.cpp
@@ -730,6 +730,7 @@ int32_t ClientInfo::DelActiveInfoCBPid(int32_t pid)
 std::vector<int32_t> ClientInfo::GetActiveInfoCBPid()
 {
     std::vector<int32_t> activeInfoCBPids;
+    std::lock_guard<std::mutex> activeInfoCBPidLock(activeInfoCBPidMutex_);
     for (auto it = activeInfoCBPidSet_.begin(); it != activeInfoCBPidSet_.end(); ++it) {
         activeInfoCBPids.push_back(*it);
     }