diff --git a/AST抽象语法树/6.AST操作之API用法-node节点/decode.js b/AST抽象语法树/6.AST操作之API用法-node节点/decode.js
new file mode 100644
index 0000000..9d69cb3
--- /dev/null
+++ b/AST抽象语法树/6.AST操作之API用法-node节点/decode.js
@@ -0,0 +1 @@
+var a = 123;
\ No newline at end of file
diff --git a/AST抽象语法树/6.AST操作之API用法-node节点/decode_obfuscator.js b/AST抽象语法树/6.AST操作之API用法-node节点/decode_obfuscator.js
new file mode 100644
index 0000000..4089908
--- /dev/null
+++ b/AST抽象语法树/6.AST操作之API用法-node节点/decode_obfuscator.js
@@ -0,0 +1,21 @@
+const fs = require('fs');
+const { parse } = require('@babel/parser');
+const traverse = require('@babel/traverse').default;
+const generator = require('@babel/generator').default;
+let encode_file = './encode.js';
+
+let js_code = fs.readFileSync(encode_file, { encoding: 'utf-8' });
+let ast = parse(js_code, {
+    sourceType: 'module',
+});
+
+traverse(ast, {
+    NumericLiteral(path) {
+        path.replaceWith(
+            parse(3).program.body[0].expression
+        );
+    },
+});
+
+const output = generator(ast).code;
+console.log(output);
diff --git a/AST抽象语法树/6.AST操作之API用法-node节点/encode.js b/AST抽象语法树/6.AST操作之API用法-node节点/encode.js
new file mode 100644
index 0000000..9d69cb3
--- /dev/null
+++ b/AST抽象语法树/6.AST操作之API用法-node节点/encode.js
@@ -0,0 +1 @@
+var a = 123;
\ No newline at end of file