diff --git a/README.md b/README.md
new file mode 100644
index 0000000..34d2ecf
--- /dev/null
+++ b/README.md
@@ -0,0 +1,29 @@
+## JavaScript 调试扩展
+
+配置模板 (默认值)
+```json
+{
+    "version": "0.0.1",
+    "configurations": [
+        {
+            "type": "topjs",
+            "request": "launch",
+            "name": "Launch Debugger",
+            "port": "30992",
+            "runtimeExecutable": "topjs3",
+            "program": "${workspaceFolder}/${command:getProgramPath}"
+        }
+    ]
+}
+```
+- 可定制的字段有`port`, `runtimeExecutable`和`program`。
+
+- `port`为任意未占用的端口号。
+
+- `runtimeExecutable`为JavaScript引擎路径(如果没有在环境变量中)
+`program`会获取当前tab打开的文件的路径，`${workspaceFolder}`表示当前的工作目录，你也可以指定脚本的绝对路径。
+
+---
+
+截图
+![screenshot](./assets/screenshot.jpg)
\ No newline at end of file
diff --git a/assets/screenshot.jpg b/assets/screenshot.jpg
new file mode 100644
index 0000000..9e0e560
Binary files /dev/null and b/assets/screenshot.jpg differ