diff --git a/broker/src/main/java/io/moquette/imhandler/SendMessageHandler.java b/broker/src/main/java/io/moquette/imhandler/SendMessageHandler.java
index 8b7390ec..14c6627e 100644
--- a/broker/src/main/java/io/moquette/imhandler/SendMessageHandler.java
+++ b/broker/src/main/java/io/moquette/imhandler/SendMessageHandler.java
@@ -136,6 +136,15 @@ public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
         ErrorCode errorCode = ErrorCode.ERROR_CODE_SUCCESS;
         boolean isAdmin = requestSourceType == ProtoConstants.RequestSourceType.Request_From_Admin;
         if (message != null) {
+            if(message.getContent().getContent().length() +
+                message.getContent().getSearchableContent().length() +
+                message.getContent().getData().size() +
+                message.getContent().getExtra().length() +
+                message.getContent().getPushContent().length() +
+                message.getContent().getPushData().length() > 64 * 1024) {
+                return ErrorCode.ERROR_CODE_MESSAGE_TOO_LARGE;
+            }
+
             boolean ignoreMsg = false;
             if (!isAdmin) {  //admin do not check the right
                 // 不能在端上直接发送撤回和群通知
diff --git a/common/src/main/java/cn/wildfirechat/common/ErrorCode.java b/common/src/main/java/cn/wildfirechat/common/ErrorCode.java
index 1a65c298..bd11b879 100755
--- a/common/src/main/java/cn/wildfirechat/common/ErrorCode.java
+++ b/common/src/main/java/cn/wildfirechat/common/ErrorCode.java
@@ -49,6 +49,7 @@ public enum ErrorCode {
     ERROR_CODE_ROBOT_NO_TOKEN(27, "robot no token"),
     ERROR_CODE_WS_NOT_CONFIGURED_CORRECTLY(28, "ws not configured correctly"),
     ERROR_CODE_TIME_INCONSISTENT(30, "time inconsistent"),
+    ERROR_CODE_MESSAGE_TOO_LARGE(35, "message too large"),
     ERROR_CODE_CONFERENCE_ROOM_NOT_EXIST(60, "conference room not exist"),
     ERROR_CODE_CONFERENCE_SERVICE_NOT_AVAILABLE(61, "conference service not available"),