diff --git a/include/MQMessage.h b/include/MQMessage.h
index 9c14e541b..cc65fd121 100755
--- a/include/MQMessage.h
+++ b/include/MQMessage.h
@@ -40,17 +40,17 @@ class ROCKETMQCLIENT_API MQMessage {
   MQMessage(const MQMessage& other);
   MQMessage& operator=(const MQMessage& other);
 
-  void setProperty(const std::string& name, const std::string& value);
-  std::string getProperty(const std::string& name) const;
+  void setProperty(const std::string& name, const std::string& value) ;
+  const std::string & getProperty(const std::string& name) const;
 
-  std::string getTopic() const;
+  const std::string &getTopic() const;
   void setTopic(const std::string& topic);
   void setTopic(const char* body, int len);
 
-  std::string getTags() const;
+  const std::string &getTags() const;
   void setTags(const std::string& tags);
 
-  std::string getKeys() const;
+  const std::string &getKeys() const;
   void setKeys(const std::string& keys);
   void setKeys(const std::vector<std::string>& keys);
 
@@ -63,7 +63,7 @@ class ROCKETMQCLIENT_API MQMessage {
   int getFlag() const;
   void setFlag(int flag);
 
-  std::string getBody() const;
+  const std::string &getBody() const;
   void setBody(const char* body, int len);
   void setBody(const std::string& body);
 
diff --git a/src/message/MQMessage.cpp b/src/message/MQMessage.cpp
index 5f3812e35..c8bae4b53 100755
--- a/src/message/MQMessage.cpp
+++ b/src/message/MQMessage.cpp
@@ -93,13 +93,16 @@ void MQMessage::setProperty(const string& name, const string& value) {
   m_properties[name] = value;
 }
 
-string MQMessage::getProperty(const string& name) const {
+const string & MQMessage::getProperty(const string& name) const {
   map<string, string>::const_iterator it = m_properties.find(name);
-
-  return (it == m_properties.end()) ? "" : (*it).second;
+  if(it == m_properties.end()){
+    return "";
+  }else{
+    return it->second;
+  }
 }
 
-string MQMessage::getTopic() const { return m_topic; }
+const string& MQMessage::getTopic() const { return m_topic; }
 
 void MQMessage::setTopic(const string& topic) { m_topic = topic; }
 
@@ -108,13 +111,13 @@ void MQMessage::setTopic(const char* body, int len) {
   m_topic.append(body, len);
 }
 
-string MQMessage::getTags() const { return getProperty(PROPERTY_TAGS); }
+const string& MQMessage::getTags() const { return getProperty(PROPERTY_TAGS); }
 
 void MQMessage::setTags(const string& tags) {
   setProperty(PROPERTY_TAGS, tags);
 }
 
-string MQMessage::getKeys() const { return getProperty(PROPERTY_KEYS); }
+const string& MQMessage::getKeys() const { return getProperty(PROPERTY_KEYS); }
 
 void MQMessage::setKeys(const string& keys) {
   setProperty(PROPERTY_KEYS, keys);
@@ -174,7 +177,7 @@ int MQMessage::getFlag() const { return m_flag; }
 
 void MQMessage::setFlag(int flag) { m_flag = flag; }
 
-string MQMessage::getBody() const { return m_body; }
+const string& MQMessage::getBody() const { return m_body; }
 
 void MQMessage::setBody(const char* body, int len) {
   m_body.clear();