diff --git a/src/controllers/handler.js b/src/controllers/handler.js
index 334e159..ee9747e 100644
--- a/src/controllers/handler.js
+++ b/src/controllers/handler.js
@@ -503,6 +503,11 @@ export default function luckysheetHandler() {
                     //按住ctrl 选择选区时  先处理上一个选区
                     let vText = $("#luckysheet-rich-text-editor").text();
                     
+                    if(vText[vText.length -1 ] === ")"){
+                        vText = vText.substr(0,vText.length - 1); //先删除最后侧的圆括号) 
+                    }
+                    
+
                     if(vText.length > 0){
                         let lastWord = vText.substr(vText.length-1,1);
                         if(lastWord!="," && lastWord!="=" && lastWord!="("){
@@ -521,7 +526,9 @@ export default function luckysheetHandler() {
                             formula.functionRangeIndex = textRange;
                         }
 
-                        $("#luckysheet-rich-text-editor").html(vText);
+                        /* 在显示前重新 + 右侧的圆括号) */
+
+                        $("#luckysheet-rich-text-editor").html(vText + ")");
 
                         formula.canceFunctionrangeSelected();
                         formula.createRangeHightlight();
@@ -531,7 +538,7 @@ export default function luckysheetHandler() {
                     formula.rangedrag_column_start = false;
                     formula.rangedrag_row_start = false;
 
-                    $("#luckysheet-functionbox-cell").html(vText);
+                    $("#luckysheet-functionbox-cell").html(vText + ")");
                     formula.rangeHightlightselected($("#luckysheet-rich-text-editor"));
 
                     //再进行 选区的选择