diff --git a/src/global/api.js b/src/global/api.js
index cb3728b..048689f 100644
--- a/src/global/api.js
+++ b/src/global/api.js
@@ -113,7 +113,7 @@ export function setCellValue(row, column, value, options = {}) {
         return tooltip.info("The order parameter is invalid.", "");
     }
 
-    let data = $.extend(true, [], file.data);
+    let data = file.data;
     if(data.length == 0){
         data = sheetmanage.buildGridData(file);
     }
@@ -147,6 +147,10 @@ export function setCellValue(row, column, value, options = {}) {
     }
     else if(value instanceof Object){
         let curv = {};
+        let cell = data[row][column];
+        if(isRealNull(cell)){
+            cell = {};
+        }
         if(value.f!=null && value.v==null){
             curv.f = value.f;
             if(value.ct!=null){
@@ -164,6 +168,9 @@ export function setCellValue(row, column, value, options = {}) {
             if(value.v!=null){
                 curv.v = value.v;
             }
+            else {
+                curv.v = cell.v;
+            }
             if(value.m!=null){
                 curv.m = value.m;
             }
@@ -175,7 +182,11 @@ export function setCellValue(row, column, value, options = {}) {
             if(attr in formatList){
                 menuButton.updateFormatCell(data, attr, v, row, row, column, column);//change range format
             }
+            else {
+                cell[attr] = v;
+            }
         }
+        data[row][column] = cell;
     }
     else{
         if(value.toString().substr(0,1)=="=" || value.toString().substr(0,5)=="<span"){