diff --git a/History.md b/History.md
index 1b2e094..3da61fc 100644
--- a/History.md
+++ b/History.md
@@ -1,6 +1,10 @@
-1.0.0 / 2017-02-26
+2.0.1 / 2017-05-22
 ==================
+  * 优化一处由于js对象引用类型引起的混乱
 
+
+2.0.0 / 2017-02-26
+==================
   * new project
   
 
diff --git a/index.js b/index.js
index b951999..d7f0623 100644
--- a/index.js
+++ b/index.js
@@ -23,12 +23,13 @@ function parseWhere(arr){
             it.join = it.join || 'AND'
             it.op = it.op || '='
             
+            let fixVal = it.val
             if(!/(^\(SELECT\s+.*\)$)|^`/.test(it.val) && !['IN', 'BETWEEN'].includes(it.op)){
                 
-                it.val = mysql.escape(it.val)
+                fixVal = mysql.escape(it.val)
             }
             
-            where += `${it.join.toUpperCase()} ${it.key} ${it.op} ${it.val} `
+            where += `${it.join.toUpperCase()} ${it.key} ${it.op} ${fixVal} `
         }
 
         where = ' WHERE ' + where.trim().replace(/^(AND|OR)/, ' ') + ' '
diff --git a/package.json b/package.json
index 5276f90..70f7bf5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mysqli",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "MySQL tool",
   "main": "index.js",
   "dependencies": {