diff --git a/app_desktop.py b/app_desktop.py
index a24c6de..29ac1a5 100644
--- a/app_desktop.py
+++ b/app_desktop.py
@@ -15,7 +15,7 @@ The following are some notes about How I worked for it.
         - flaskwebgui github repo: https://github.com/ClimenteA/flaskwebgui
     b. add some scripts to keep server running while gui is running
         - see here: https://github.com/ClimenteA/flaskwebgui#install
-        - I added the code in the index.js
+        - I added the code in the index.js (around line 355)
     c. Then run: `python app_desktop.py`, the web browser will be automatically lauched for onnx-modifier
 
 2. How to generate excutable files:
diff --git a/docs/add_new_outputs.gif b/docs/add_new_outputs.gif
new file mode 100644
index 0000000..456013e
Binary files /dev/null and b/docs/add_new_outputs.gif differ
diff --git a/docs/rename_model_io.gif b/docs/rename_model_io.gif
new file mode 100644
index 0000000..389358c
Binary files /dev/null and b/docs/rename_model_io.gif differ
diff --git a/docs/todo_list.md b/docs/todo_list.md
index 746058b..dc198fb 100644
--- a/docs/todo_list.md
+++ b/docs/todo_list.md
@@ -1,15 +1,17 @@
 # TODO
 
-- support desktop application.
-- support more flexible downloading schema
-    - As this [request](https://github.com/ZhangGe6/onnx-modifier/pull/5) notes, the current downloading schema prevents `onnx-modifier ` from being deployed remotely as a service.
-
-- support adding more complicated nodes (which has some simple parameters like `reshape`).
-- support adding model input/output node.
-- support combine models.
-- support user-defined input/output number when the type of node's input/output is list.
-- slim the codes.
-    - because some `.js` files (like electron.js and even python.js) in the `static` folder and `electron.html` in `templates` folder are legacy of Netron and can be further slimmed.
+- [ ] support desktop application.
+    - [x] Windows
+    - [ ] Linux
+- [ ] support more flexible downloading schema
+    - [ ] As this [request](https://github.com/ZhangGe6/onnx-modifier/pull/5) notes, the current downloading schema prevents `onnx-modifier ` from being deployed remotely as a service.
+- [ ] support adding more complicated nodes (which has some simple parameters like `reshape`).
+- [ ] support combine models.
+- [ ] support user-defined input/output number when the type of node's input/output is list.
+- [ ] slim the code.
+    - [ ] because some `.js` files (like electron.js and even python.js) in the `static` folder and `electron.html` in `templates` folder are legacy of Netron and can be further slimmed.
+- [x] support adding model input/output node.
+- [x] fix issue that "extra model inputs" emerges after deleting nodes. [issue#12](https://github.com/ZhangGe6/onnx-modifier/issues/12)
 
 
 # Some known reference issues/feature requests
diff --git a/docs/update_log.md b/docs/update_log.md
index 7688aa4..5d9b360 100644
--- a/docs/update_log.md
+++ b/docs/update_log.md
@@ -1,15 +1,23 @@
 # onnx-modifier update log
 
+## 20220813
+
+- support adding model input/output node. [issue 7](https://github.com/ZhangGe6/onnx-modifier/issues/7), [issue 8](https://github.com/ZhangGe6/onnx-modifier/issues/8), [issue 13](https://github.com/ZhangGe6/onnx-modifier/issues/13)
+
+- fix issue that "extra model inputs" emerges after deleting nodes. [issue#12](https://github.com/ZhangGe6/onnx-modifier/issues/12)
+- update windows executable file.
+
 ## 20220701
-support renaming model input/output
+
+- support renaming model input/output
 
 ## 20220621
-add Dockerfile
-    - thanks to [fengwang](https://github.com/fengwang)
+- add Dockerfile
+  - thanks to [fengwang](https://github.com/fengwang)
 
 ## 20220620
 
-add Windows executable file.
+- add Windows executable file.
 
 ## 20220612
 
diff --git a/onnx_modifier.py b/onnx_modifier.py
index bf42a59..5bb4029 100644
--- a/onnx_modifier.py
+++ b/onnx_modifier.py
@@ -299,12 +299,11 @@ if __name__ == "__main__":
         
     def test_inference():
         onnx_modifier.inference()
-    test_inference()
+    # test_inference()
     
     def test_add_output():
         # print(onnx_modifier.graph.output)
         onnx_modifier.add_outputs(['fire2/squeeze1x1_1'])
         # print(onnx_modifier.graph.output)
         onnx_modifier.check_and_save_model()
-    # test_add_output()
-        
\ No newline at end of file
+    # test_add_output()
\ No newline at end of file
diff --git a/readme.md b/readme.md
index 6c1d359..1d253a3 100644
--- a/readme.md
+++ b/readme.md
@@ -20,6 +20,7 @@ Currently, the following editing operations are supported:
   - Recover a deleted node.
 - [x] Rename the node inputs/outputs
 - [x] Rename the model inputs/outputs
+- [x] Add new model outputs
 - [x] Edit the attribute of nodes
 - [x] Add new nodes (experimental)
 
@@ -52,8 +53,8 @@ Click the url in the output info generated by flask (`http://127.0.0.1:5000/` fo
 ## launch from executable file
 <details>
   <summary>Click to expand</summary>
-  
-- Windows: Download [onnx-modifier.exe (27.6MB)](https://drive.google.com/file/d/1y7mYlvF0G5iiNDgOFh1ESXlTs8I2ipVQ/view?usp=sharing), double-click it and enjoy.
+
+- Windows: Download [onnx-modifier.exe (27.6MB)](https://drive.google.com/file/d/1LRXgZauQ5BUENe_PvilRW8WvSO-4Jr9j/view?usp=sharing), double-click it and enjoy.
   - Edge browser is used for runtime environment by default.
 
 > I recorded how I made the the executable file in `app_desktop.py`. The executable file for other platforms are left for future work.
@@ -139,6 +140,16 @@ The process is shown in the following figure:
 ## Rename the model inputs/outputs
 Click the model input/output node, type a new name in the sidebar, then we are done.
 
+![rename_model_io](./docs/rename_model_io.gif)
+
+## Add new model outputs
+
+Sometimes we want to add/extract the output of a certain node as model output. For example, we want to add a new model output after the old one was deleted, or extract intermediate layer output for fine-grained analysis. In `onnx-modifier`, we can achieve this by simply clicking the `Add Output` button in the sidebar of the corresponding node. Then we can get a new model output node following the corresponding node. Its name is the same as the output of the corresponding node.  
+
+In the following example, we add 2 new model outputs, which are the outputs of the 1st `Conv` node and 2nd `Conv` node, respectively.
+
+![add_new_outputs](./docs/add_new_outputs.gif)
+
 ## Edit the attribute of nodes
 
 Change the original attribute to a new value, then we are done.
diff --git a/readme_zh-CN.md b/readme_zh-CN.md
index e383ccb..0a4432c 100644
--- a/readme_zh-CN.md
+++ b/readme_zh-CN.md
@@ -20,6 +20,8 @@
   - 删除一个节点及所有以该节点为根节点的子节点
   - 恢复误删的节点
 - [x] 修改节点输入输出名
+- [x] 修改模型输入输出名
+- [x] 增加模型输出节点
 - [x] 编辑节点属性值
 - [x] 增加新节点（beta）
 
@@ -47,7 +49,7 @@
   ```
 
 ## 从可执行文件启动
-- Windows: 下载可执行文件[onnx-modifier.exe (27.6MB)](https://drive.google.com/file/d/1y7mYlvF0G5iiNDgOFh1ESXlTs8I2ipVQ/view?usp=sharing)，双击即可启动。
+- Windows: 下载可执行文件[onnx-modifier.exe (27.6MB)](https://drive.google.com/file/d/1LRXgZauQ5BUENe_PvilRW8WvSO-4Jr9j/view?usp=sharing)，双击即可启动。
   - 默认使用Edge浏览器作为运行环境。
 > 生成可执行文件的步骤记录在`app_desktop.py`文件中。未来会为其他平台生成可执行文件。
 
@@ -102,6 +104,22 @@
 
 <img src="./docs/rename_io.gif" style="zoom:75%;" />
 
+## 修改模型输入输出名称
+
+点击模型输入或输出节点，在弹出的侧边栏中，为模型输入输出键入新的名称即可。
+
+![rename_model_io](./docs/rename_model_io.gif)
+
+## 增加模型输出节点
+
+有时候我们需要增加/抽取某个特定节点的输出作为整个模型的输出。比如之前的模型输出节点在编辑过程中被删除了，需要增加新的，或者有时候我们需要抽取一些中间层特征输出做更细致的分析。
+
+通过`onnx-modifier`，我们只需要在对应节点的侧边栏中，点击`Add Output`按钮即可在该节点后部增加一个模型输出节点，其名称与原节点的输出名相同。
+
+如下图，我们增加了两个模型输出节点，分别为第一个卷积层的输出和第二个卷积层的输出。
+
+![add_new_outputs](./docs/add_new_outputs.gif)
+
 ## 编辑节点属性值
 
 在节点侧边栏对应的属性值输入框中，键入新的属性值即可。