diff --git a/msmonitor/plugin/ipc_monitor/NpuIpcEndPoint.h b/msmonitor/plugin/ipc_monitor/NpuIpcEndPoint.h
index 22c43905fe242c4e5012836f54e1ae041189fe7b..38d837ad94abe739bbd29bfaecd9a621c8e99e39 100644
--- a/msmonitor/plugin/ipc_monitor/NpuIpcEndPoint.h
+++ b/msmonitor/plugin/ipc_monitor/NpuIpcEndPoint.h
@@ -31,7 +31,7 @@ namespace ipc_monitor {
 
 using fileDesT = int;
 constexpr const char STR_END_CHAR = '\0';
-constexpr int SOCKET_FD_CHMOD = 0666;
+constexpr int SOCKET_FD_CHMOD = 0640;
 
 struct NpuPayLoad {
     size_t size;