diff --git a/src/main/java/net/lamgc/cgj/bot/MessageSender.java b/src/main/java/net/lamgc/cgj/bot/MessageSender.java
new file mode 100644
index 0000000..c6e9003
--- /dev/null
+++ b/src/main/java/net/lamgc/cgj/bot/MessageSender.java
@@ -0,0 +1,15 @@
+package net.lamgc.cgj.bot;
+
+public interface MessageSender {
+
+    /**
+     * 发送消息并返回消息id
+     * @param message 消息内容
+     * @return 返回非负数则发送成功,
+     *          返回0则发送器不支持消息Id,
+     *          返回非0正整数则为消息Id,
+     *          返回负数则为错误.
+     */
+    int sendMessage(final String message);
+
+}
diff --git a/src/main/java/net/lamgc/cgj/bot/event/MessageEvent.java b/src/main/java/net/lamgc/cgj/bot/event/MessageEvent.java
index 0e896c0..99c46bd 100644
--- a/src/main/java/net/lamgc/cgj/bot/event/MessageEvent.java
+++ b/src/main/java/net/lamgc/cgj/bot/event/MessageEvent.java
@@ -1,8 +1,9 @@
 package net.lamgc.cgj.bot.event;
 
+import net.lamgc.cgj.bot.MessageSender;
 import net.lamgc.utils.event.EventObject;
 
-public abstract class MessageEvent implements EventObject {
+public abstract class MessageEvent implements EventObject, MessageSender {
 
     private final long fromGroup;
     private final long fromQQ;
@@ -19,6 +20,7 @@ public abstract class MessageEvent implements EventObject {
      * @param message 消息内容
      * @return 成功返回MessageId, 如没有MessageId则返回0, 失败返回负数错误码
      */
+    @Override
     public abstract int sendMessage(final String message);
 
     /**