diff --git a/package.json b/package.json
index 425be99..906fc29 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tz-storage",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "description": "A light-weight localStorage tool.",
   "main": "index.js",
   "types": "types/index.d.ts",
diff --git a/readme.md b/readme.md
index 013ded6..c05013e 100644
--- a/readme.md
+++ b/readme.md
@@ -40,6 +40,14 @@ Set a default value in advance:
 storage.defaultValue = 'nothing'
 ```
 
+Set options by config:
+```javascript
+storage.config({
+  namespace: 'space',
+  defaultValue: 'empty'
+})
+```
+
 ## Set
 Set a storage with any types:
 ```javascript