diff --git a/README.md b/README.md
index 0ffb4ca014c393b7bf8354ab691f10a690ea2986..3d35b4532812f804f5f57cbbe07f26e1fc3d33c0 100644
--- a/README.md
+++ b/README.md
@@ -49,6 +49,54 @@ max = a>b?a:b;
 
 ``` 
 
+### 和java语法相比，要避免的一些ql写法错误
+- 不支持try{}catch{}
+- 不支持java8的lambda表达式
+- 不支持for循环集合操作for (GRCRouteLineResultDTO item : list)
+- 弱类型语言，请不要定义类型声明,更不要用Templete（Map<String,List>之类的）
+- array的声明不一样
+- min,max,round,print,println,like,in 都是系统默认函数的关键字，请不要作为变量名
+
+```
+//java语法：使用泛型来提醒开发者检查类型
+keys = new ArrayList<String>();
+deviceName2Value = new HashMap<String,String>(7);
+String[] deviceNames = {"ng","si","umid","ut","mac","imsi","imei"};
+int[] mins = {5,30};
+
+//ql写法：
+keys = new ArrayList();
+deviceName2Value = new HashMap();
+deviceNames = ["ng","si","umid","ut","mac","imsi","imei"];
+mins = [5,30];
+
+
+//java语法：对象类型声明
+FocFulfillDecisionReqDTO reqDTO = param.getReqDTO();
+//ql写法：
+reqDTO = param.getReqDTO();
+
+//java语法：数组遍历
+for(GRCRouteLineResultDTO item : list) {
+}
+//ql写法：
+for(i=0;i<list.size();i++){
+item = list.get(i);
+}
+
+//java语法：map遍历
+for(String key : map.keySet()) {
+  System.out.println(map.get(key));
+}
+//ql写法：
+  keySet = map.keySet();
+  objArr = keySet.toArray();
+  for (i=0;i<objArr.length;i++) {
+  key = objArr[i];
+   System.out.println(map.get(key));
+  }
+```
+
 ### java的对象操作
 
 ```