diff --git a/src/core/designer.js b/src/core/designer.js
index 0902092..1dec276 100644
--- a/src/core/designer.js
+++ b/src/core/designer.js
@@ -636,11 +636,12 @@ class Designer {
   createExtensionModel(values = []) {
     const extensions = []
     values.forEach(extension => {
+      const descriptor = extension.$type || extension.name
+      delete extension.$type
+      delete extension.name
       const extensionModel = this.createModel({
-        descriptor: extension.$type || extension.name,
-        attrs: {
-          value: extension.$body || extension.value
-        }
+        descriptor,
+        attrs: extension
       })
       if (extensionModel) {
         extensions.push(extensionModel)
diff --git a/src/utils/utils.js b/src/utils/utils.js
index 4a39f15..cf8fbe7 100644
--- a/src/utils/utils.js
+++ b/src/utils/utils.js
@@ -261,12 +261,11 @@ export const setExportData = element => {
  */
 const setExportExtensions = values => {
   const extensions = []
-
   for (let i = 0; i < values.length; i += 1) {
-    extensions.push({
-      name: values[i].$type,
-      value: values[i].value
-    })
+    const item = cloneDeep(values[i])
+    item.name = item.$type
+    delete item.$type
+    extensions.push(item)
   }
 
   return extensions
diff --git a/static/extensions.js b/static/extensions.js
index 603292b..52476df 100644
--- a/static/extensions.js
+++ b/static/extensions.js
@@ -18,6 +18,11 @@ var Extension = {
       name: 'test2',
       superClass: ['Element'],
       properties: [
+        {
+          name: 'attr',
+          type: 'String',
+          isAttr: true
+        },
         {
           name: 'value',
           isBody: true,
@@ -28,4 +33,4 @@ var Extension = {
   ],
   emumerations: [],
   associations: []
-}
\ No newline at end of file
+}
diff --git a/static/index.html b/static/index.html
index eba2d61..c96b995 100644
--- a/static/index.html
+++ b/static/index.html
@@ -197,7 +197,8 @@
               },
               {
                 name: 't:test2',
-                value: '测试2'
+                value: '测试2',
+                attr: 'attr2'
               }
             ]
           })