diff --git a/src/index.ts b/src/index.ts
index a14cfd4..33346d4 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -15,7 +15,7 @@ import {
 } from '@swc/core';
 import createDeepMerge from '@fastify/deepmerge';
 
-import { getOptions, getEnableExperimentalDecorators } from './options';
+import { getOptions, checkIsLegacyTypeScript } from './options';
 
 import type { Plugin as VitePlugin } from 'vite';
 
@@ -67,7 +67,7 @@ function swc(options: PluginOptions = {}): RollupPlugin {
     return null;
   };
 
-  const enableExperimentalDecorators = getEnableExperimentalDecorators();
+  const isLegacyTypeScript = checkIsLegacyTypeScript();
 
   return {
     name: 'swc',
@@ -127,7 +127,7 @@ function swc(options: PluginOptions = {}): RollupPlugin {
           parser: {
             syntax: isTypeScript ? 'typescript' : 'ecmascript',
             [isTypeScript ? 'tsx' : 'jsx']: isTypeScript ? isTsx : isJsx,
-            decorators: enableExperimentalDecorators || tsconfigOptions.experimentalDecorators
+            decorators: !isLegacyTypeScript || tsconfigOptions.experimentalDecorators
           },
           transform: {
             decoratorMetadata: tsconfigOptions.emitDecoratorMetadata,
@@ -140,7 +140,7 @@ function swc(options: PluginOptions = {}): RollupPlugin {
               pragmaFrag: tsconfigOptions.jsxFragmentFactory,
               development: tsconfigOptions.jsx === 'react-jsxdev' ? true : undefined
             },
-            decoratorVersion: enableExperimentalDecorators ? '2022-03' : '2021-12'
+            decoratorVersion: isLegacyTypeScript ? '2021-12' : (tsconfigOptions.experimentalDecorators ? '2021-12' : '2022-03')
           },
           target: tsconfigOptions.target?.toLowerCase() as JscTarget | undefined,
           baseUrl: tsconfigOptions.baseUrl,
diff --git a/src/options.ts b/src/options.ts
index 223083d..0dd5fc7 100644
--- a/src/options.ts
+++ b/src/options.ts
@@ -59,14 +59,14 @@ export const getOptions = (
   return compilerOptions;
 };
 
-export const getEnableExperimentalDecorators = () => {
+export const checkIsLegacyTypeScript = () => {
   try {
     // @ts-expect-error -- It's required to using 'import.mtea.url' but i don't want to change the tsconfig.
     const tsPath = resolve('typescript/package.json', import.meta.url);
     const { version } = JSON.parse(fs.readFileSync(fileURLToPath(tsPath), 'utf-8'));
     const [major] = version.split('.');
-    // Only check experimental decorators for TypeScript 5+
-    return +major >= 5;
+    // typescript 5+ enable experimentalDecorators by default so we think it's not legacy
+    return +major < 5;
   } catch {
     return false;
   }
diff --git a/test/__snapshots__/index.ts.snap b/test/__snapshots__/index.ts.snap
index b6d8023..a866ec4 100644
--- a/test/__snapshots__/index.ts.snap
+++ b/test/__snapshots__/index.ts.snap
@@ -1,6 +1,6 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`rollup-plugin-swc3 swc (rollup 2) detect  decorator for typescript5 1`] = `
+exports[`rollup-plugin-swc3 swc (rollup 2) detect decorator for typescript5 1`] = `
 "function _array_like_to_array(arr, len) {
     if (len == null || len > arr.length) len = arr.length;
     for(var i = 0, arr2 = new Array(len); i < len; i++)arr2[i] = arr[i];
@@ -14,6 +14,20 @@ function _class_call_check(instance, Constructor) {
         throw new TypeError(\\"Cannot call a class as a function\\");
     }
 }
+function _defineProperties(target, props) {
+    for(var i = 0; i < props.length; i++){
+        var descriptor = props[i];
+        descriptor.enumerable = descriptor.enumerable || false;
+        descriptor.configurable = true;
+        if (\\"value\\" in descriptor) descriptor.writable = true;
+        Object.defineProperty(target, descriptor.key, descriptor);
+    }
+}
+function _create_class(Constructor, protoProps, staticProps) {
+    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
+    if (staticProps) _defineProperties(Constructor, staticProps);
+    return Constructor;
+}
 function _define_property(obj, key, value) {
     if (key in obj) {
         Object.defineProperty(obj, key, {
@@ -437,23 +451,97 @@ function applyDecs2203RFactory() {
 function _apply_decs_2203_r(targetClass, memberDecs, classDecs, parentClass) {
     return (_apply_decs_2203_r = applyDecs2203RFactory())(targetClass, memberDecs, classDecs, parentClass);
 }
-var // @ts-expect-error
-_init_name;
-var printMemberName = function(target, memberName) {
-    console.log(memberName);
-};
-var Person = function Person() {
-    _class_call_check(this, Person);
-    _define_property(this, \\"name\\", _init_name(this, \\"Jon\\"));
-};
+var _initProto;
+function trace(value, param) {
+    var kind = param.kind; param.name;
+    if (kind === 'method') {
+        return function() {
+            for(var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++){
+                args[_key] = arguments[_key];
+            }
+            console.log('trace');
+            return value.apply(this, args);
+        };
+    }
+}
+var People = /*#__PURE__*/ function() {
+    function People() {
+        _class_call_check(this, People);
+        _define_property(this, \\"xzy\\", void 0);
+        _initProto(this);
+        this.xzy = 'xzy';
+    }
+    _create_class(People, [
+        {
+            key: \\"test\\",
+            value: function test() {
+                return this.xzy;
+            }
+        }
+    ]);
+    return People;
+}();
 var ref, ref1;
-ref = _apply_decs_2203_r(Person, [
+ref = _apply_decs_2203_r(People, [
     [
-        printMemberName,
-        0,
-        \\"name\\"
+        trace,
+        2,
+        \\"test\\"
     ]
-], []), ref1 = _sliced_to_array(ref.e, 1), _init_name = ref1[0];
+], []), ref1 = _sliced_to_array(ref.e, 1), _initProto = ref1[0];
+var p = new People();
+p.test();
+"
+`;
+
+exports[`rollup-plugin-swc3 swc (rollup 2) detect legacy decorator for typescript5 1`] = `
+"function _define_property(obj, key, value) {
+    if (key in obj) {
+        Object.defineProperty(obj, key, {
+            value: value,
+            enumerable: true,
+            configurable: true,
+            writable: true
+        });
+    } else {
+        obj[key] = value;
+    }
+    return obj;
+}
+function _ts_decorate(decorators, target, key, desc) {
+    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
+    if (typeof Reflect === \\"object\\" && typeof Reflect.decorate === \\"function\\") r = Reflect.decorate(decorators, target, key, desc);
+    else for(var i = decorators.length - 1; i >= 0; i--)if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
+    return c > 3 && r && Object.defineProperty(target, key, r), r;
+}
+function _ts_metadata(k, v) {
+    if (typeof Reflect === \\"object\\" && typeof Reflect.metadata === \\"function\\") return Reflect.metadata(k, v);
+}
+function trace(_target, _name, descriptor) {
+    const original = descriptor.value;
+    descriptor.value = function() {
+        console.log('trace');
+        return original.call(this);
+    };
+    return descriptor;
+}
+class People {
+    test() {
+        return this.xzy;
+    }
+    constructor(){
+        _define_property(this, \\"xzy\\", void 0);
+        this.xzy = 'xzy';
+    }
+}
+_ts_decorate([
+    trace,
+    _ts_metadata(\\"design:type\\", Function),
+    _ts_metadata(\\"design:paramtypes\\", []),
+    _ts_metadata(\\"design:returntype\\", void 0)
+], People.prototype, \\"test\\", null);
+const p = new People();
+p.test();
 "
 `;
 
@@ -1158,7 +1246,7 @@ export { foo };
 "
 `;
 
-exports[`rollup-plugin-swc3 swc (rollup 3) detect  decorator for typescript5 1`] = `
+exports[`rollup-plugin-swc3 swc (rollup 3) detect decorator for typescript5 1`] = `
 "function _array_like_to_array(arr, len) {
     if (len == null || len > arr.length) len = arr.length;
     for(var i = 0, arr2 = new Array(len); i < len; i++)arr2[i] = arr[i];
@@ -1172,6 +1260,20 @@ function _class_call_check(instance, Constructor) {
         throw new TypeError(\\"Cannot call a class as a function\\");
     }
 }
+function _defineProperties(target, props) {
+    for(var i = 0; i < props.length; i++){
+        var descriptor = props[i];
+        descriptor.enumerable = descriptor.enumerable || false;
+        descriptor.configurable = true;
+        if (\\"value\\" in descriptor) descriptor.writable = true;
+        Object.defineProperty(target, descriptor.key, descriptor);
+    }
+}
+function _create_class(Constructor, protoProps, staticProps) {
+    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
+    if (staticProps) _defineProperties(Constructor, staticProps);
+    return Constructor;
+}
 function _define_property(obj, key, value) {
     if (key in obj) {
         Object.defineProperty(obj, key, {
@@ -1595,23 +1697,97 @@ function applyDecs2203RFactory() {
 function _apply_decs_2203_r(targetClass, memberDecs, classDecs, parentClass) {
     return (_apply_decs_2203_r = applyDecs2203RFactory())(targetClass, memberDecs, classDecs, parentClass);
 }
-var // @ts-expect-error
-_init_name;
-var printMemberName = function(target, memberName) {
-    console.log(memberName);
-};
-var Person = function Person() {
-    _class_call_check(this, Person);
-    _define_property(this, \\"name\\", _init_name(this, \\"Jon\\"));
-};
+var _initProto;
+function trace(value, param) {
+    var kind = param.kind; param.name;
+    if (kind === 'method') {
+        return function() {
+            for(var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++){
+                args[_key] = arguments[_key];
+            }
+            console.log('trace');
+            return value.apply(this, args);
+        };
+    }
+}
+var People = /*#__PURE__*/ function() {
+    function People() {
+        _class_call_check(this, People);
+        _define_property(this, \\"xzy\\", void 0);
+        _initProto(this);
+        this.xzy = 'xzy';
+    }
+    _create_class(People, [
+        {
+            key: \\"test\\",
+            value: function test() {
+                return this.xzy;
+            }
+        }
+    ]);
+    return People;
+}();
 var ref, ref1;
-ref = _apply_decs_2203_r(Person, [
+ref = _apply_decs_2203_r(People, [
     [
-        printMemberName,
-        0,
-        \\"name\\"
+        trace,
+        2,
+        \\"test\\"
     ]
-], []), ref1 = _sliced_to_array(ref.e, 1), _init_name = ref1[0];
+], []), ref1 = _sliced_to_array(ref.e, 1), _initProto = ref1[0];
+var p = new People();
+p.test();
+"
+`;
+
+exports[`rollup-plugin-swc3 swc (rollup 3) detect legacy decorator for typescript5 1`] = `
+"function _define_property(obj, key, value) {
+    if (key in obj) {
+        Object.defineProperty(obj, key, {
+            value: value,
+            enumerable: true,
+            configurable: true,
+            writable: true
+        });
+    } else {
+        obj[key] = value;
+    }
+    return obj;
+}
+function _ts_decorate(decorators, target, key, desc) {
+    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
+    if (typeof Reflect === \\"object\\" && typeof Reflect.decorate === \\"function\\") r = Reflect.decorate(decorators, target, key, desc);
+    else for(var i = decorators.length - 1; i >= 0; i--)if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
+    return c > 3 && r && Object.defineProperty(target, key, r), r;
+}
+function _ts_metadata(k, v) {
+    if (typeof Reflect === \\"object\\" && typeof Reflect.metadata === \\"function\\") return Reflect.metadata(k, v);
+}
+function trace(_target, _name, descriptor) {
+    const original = descriptor.value;
+    descriptor.value = function() {
+        console.log('trace');
+        return original.call(this);
+    };
+    return descriptor;
+}
+class People {
+    test() {
+        return this.xzy;
+    }
+    constructor(){
+        _define_property(this, \\"xzy\\", void 0);
+        this.xzy = 'xzy';
+    }
+}
+_ts_decorate([
+    trace,
+    _ts_metadata(\\"design:type\\", Function),
+    _ts_metadata(\\"design:paramtypes\\", []),
+    _ts_metadata(\\"design:returntype\\", void 0)
+], People.prototype, \\"test\\", null);
+const p = new People();
+p.test();
 "
 `;
 
@@ -2314,7 +2490,7 @@ export { foo };
 "
 `;
 
-exports[`rollup-plugin-swc3 swc (rollup 4) detect  decorator for typescript5 1`] = `
+exports[`rollup-plugin-swc3 swc (rollup 4) detect decorator for typescript5 1`] = `
 "function _array_like_to_array(arr, len) {
     if (len == null || len > arr.length) len = arr.length;
     for(var i = 0, arr2 = new Array(len); i < len; i++)arr2[i] = arr[i];
@@ -2328,6 +2504,19 @@ function _class_call_check(instance, Constructor) {
         throw new TypeError(\\"Cannot call a class as a function\\");
     }
 }
+function _defineProperties(target, props) {
+    for(var i = 0; i < props.length; i++){
+        var descriptor = props[i];
+        descriptor.enumerable = descriptor.enumerable || false;
+        descriptor.configurable = true;
+        if (\\"value\\" in descriptor) descriptor.writable = true;
+        Object.defineProperty(target, descriptor.key, descriptor);
+    }
+}
+function _create_class(Constructor, protoProps, staticProps) {
+    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
+    return Constructor;
+}
 function _define_property(obj, key, value) {
     if (key in obj) {
         Object.defineProperty(obj, key, {
@@ -2751,23 +2940,97 @@ function applyDecs2203RFactory() {
 function _apply_decs_2203_r(targetClass, memberDecs, classDecs, parentClass) {
     return (_apply_decs_2203_r = applyDecs2203RFactory())(targetClass, memberDecs, classDecs, parentClass);
 }
-var // @ts-expect-error
-_init_name;
-var printMemberName = function(target, memberName) {
-    console.log(memberName);
-};
-var Person = function Person() {
-    _class_call_check(this, Person);
-    _define_property(this, \\"name\\", _init_name(this, \\"Jon\\"));
-};
+var _initProto;
+function trace(value, param) {
+    var kind = param.kind; param.name;
+    if (kind === 'method') {
+        return function() {
+            for(var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++){
+                args[_key] = arguments[_key];
+            }
+            console.log('trace');
+            return value.apply(this, args);
+        };
+    }
+}
+var People = /*#__PURE__*/ function() {
+    function People() {
+        _class_call_check(this, People);
+        _define_property(this, \\"xzy\\", void 0);
+        _initProto(this);
+        this.xzy = 'xzy';
+    }
+    _create_class(People, [
+        {
+            key: \\"test\\",
+            value: function test() {
+                return this.xzy;
+            }
+        }
+    ]);
+    return People;
+}();
 var ref, ref1;
-ref = _apply_decs_2203_r(Person, [
+ref = _apply_decs_2203_r(People, [
     [
-        printMemberName,
-        0,
-        \\"name\\"
+        trace,
+        2,
+        \\"test\\"
     ]
-], []), ref1 = _sliced_to_array(ref.e, 1), _init_name = ref1[0];
+], []), ref1 = _sliced_to_array(ref.e, 1), _initProto = ref1[0];
+var p = new People();
+p.test();
+"
+`;
+
+exports[`rollup-plugin-swc3 swc (rollup 4) detect legacy decorator for typescript5 1`] = `
+"function _define_property(obj, key, value) {
+    if (key in obj) {
+        Object.defineProperty(obj, key, {
+            value: value,
+            enumerable: true,
+            configurable: true,
+            writable: true
+        });
+    } else {
+        obj[key] = value;
+    }
+    return obj;
+}
+function _ts_decorate(decorators, target, key, desc) {
+    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
+    if (typeof Reflect === \\"object\\" && typeof Reflect.decorate === \\"function\\") r = Reflect.decorate(decorators, target, key, desc);
+    else for(var i = decorators.length - 1; i >= 0; i--)if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
+    return c > 3 && r && Object.defineProperty(target, key, r), r;
+}
+function _ts_metadata(k, v) {
+    if (typeof Reflect === \\"object\\" && typeof Reflect.metadata === \\"function\\") return Reflect.metadata(k, v);
+}
+function trace(_target, _name, descriptor) {
+    const original = descriptor.value;
+    descriptor.value = function() {
+        console.log('trace');
+        return original.call(this);
+    };
+    return descriptor;
+}
+class People {
+    test() {
+        return this.xzy;
+    }
+    constructor(){
+        _define_property(this, \\"xzy\\", void 0);
+        this.xzy = 'xzy';
+    }
+}
+_ts_decorate([
+    trace,
+    _ts_metadata(\\"design:type\\", Function),
+    _ts_metadata(\\"design:paramtypes\\", []),
+    _ts_metadata(\\"design:returntype\\", void 0)
+], People.prototype, \\"test\\", null);
+const p = new People();
+p.test();
 "
 `;
 
diff --git a/test/fixtures/decorators/index.ts b/test/fixtures/decorators/index.ts
index 3754a4c..5a8a8ec 100644
--- a/test/fixtures/decorators/index.ts
+++ b/test/fixtures/decorators/index.ts
@@ -1,9 +1,23 @@
-const printMemberName = (target: any, memberName: string) => {
-    console.log(memberName);
-  };
-  
-class Person {
-    // @ts-expect-error
-    @printMemberName
-    name: string = "Jon";
-}
\ No newline at end of file
+function trace(value, {kind, name}) {
+  if (kind === 'method') {
+    return function (...args) {
+      console.log('trace')
+      return value.apply(this, args);
+    };
+  }
+}
+
+class People {
+  xzy: string
+  constructor(){
+    this.xzy = 'xzy';
+  }
+  @trace
+  test() {
+    return this.xzy
+  }
+}
+
+const p = new People();
+
+p.test();
diff --git a/test/fixtures/legacy-decorators/index.ts b/test/fixtures/legacy-decorators/index.ts
new file mode 100644
index 0000000..3b41e0d
--- /dev/null
+++ b/test/fixtures/legacy-decorators/index.ts
@@ -0,0 +1,25 @@
+function trace(_target: any, _name: string, descriptor: PropertyDescriptor) {
+  const original = descriptor.value;
+  descriptor.value = function () {
+    console.log('trace');
+    return original.call(this);
+  };
+
+  return descriptor;
+}
+
+class People {
+  xzy: string;
+  constructor() {
+    this.xzy = 'xzy';
+  }
+
+  @trace
+  test() {
+    return this.xzy;
+  }
+}
+
+const p = new People();
+
+p.test();
diff --git a/test/fixtures/legacy-decorators/tsconfig.json b/test/fixtures/legacy-decorators/tsconfig.json
new file mode 100644
index 0000000..324640c
--- /dev/null
+++ b/test/fixtures/legacy-decorators/tsconfig.json
@@ -0,0 +1,9 @@
+{
+  "compilerOptions": {
+    "target": "ES2017",
+    "experimentalDecorators": true,
+    "emitDecoratorMetadata": true,
+    "module": "ES2022",
+    "baseUrl": "./"
+  }
+}
diff --git a/test/index.ts b/test/index.ts
index 36c5907..b99c0a1 100644
--- a/test/index.ts
+++ b/test/index.ts
@@ -376,7 +376,7 @@ const tests = (rollupImpl: typeof rollup2 | typeof rollup3 | typeof rollup4, iso
     ))[0].code.should.matchSnapshot();
   });
 
-  it('detect  decorator for typescript5', async () => {
+  it('detect decorator for typescript5', async () => {
     const dir = await fixture('decorators');
     (await build(
       rollupImpl,
@@ -384,6 +384,14 @@ const tests = (rollupImpl: typeof rollup2 | typeof rollup3 | typeof rollup4, iso
       { input: './index.ts', dir }
     ))[0].code.should.matchSnapshot();
   });
+  it('detect legacy decorator for typescript5', async () => {
+    const dir = await fixture('legacy-decorators');
+    (await build(
+      rollupImpl,
+      {},
+      { input: './index.ts', dir }
+    ))[0].code.should.matchSnapshot();
+  });
 };
 
 describe('rollup-plugin-swc3', () => {