diff --git a/util/util.cpp b/util/util.cpp
index cd11633..884f358 100644
--- a/util/util.cpp
+++ b/util/util.cpp
@@ -158,6 +158,7 @@ void serialize(CMessageInfo& msg_info, char** out_buf, int& len, bool reuse_mem)
         *out_buf = new char[len];
     }
 
+    std::memset(*out_buf, 0x0, kz + 1);
     char* ptr = *out_buf + kz + 1;
 
     // 序列化 cmd