diff --git a/src/stocks/base/index.ts b/src/stocks/base/index.ts
index 6364629..bb56d1c 100644
--- a/src/stocks/base/index.ts
+++ b/src/stocks/base/index.ts
@@ -5,14 +5,14 @@ import StockApi from "types/stocks/index";
 /**
  * 基础股票代码接口
  */
-class Base implements StockApi {
+const Base: StockApi = {
   /**
    * 获取股票数据
    * @param code 股票代码
    */
   async getStock(code: string): Promise<Stock> {
     throw new Error("未实现获取股票数据");
-  }
+  },
 
   /**
    * 获取股票数据组
@@ -21,6 +21,6 @@ class Base implements StockApi {
   async getStocks(codes: string[]): Promise<Stock[]> {
     throw new Error("未实现获取股票数据组");
   }
-}
+};
 
 export default Base;
diff --git a/src/stocks/netease/index.ts b/src/stocks/netease/index.ts
index b7aa852..f0b044c 100644
--- a/src/stocks/netease/index.ts
+++ b/src/stocks/netease/index.ts
@@ -8,11 +8,12 @@ import fetch from "@utils/fetch";
 
 // Types
 import Stock from "types/utils/stock";
+import StockApi from "types/stocks/index";
 
 /**
  * 网易股票代码接口
  */
-class Netease extends Base {
+const Netease: StockApi = {
   /**
    * 获取股票数据
    * @param code 股票代码
@@ -37,7 +38,7 @@ class Netease extends Base {
       high: 0,
       yesterday: 0,
     };
-  }
+  },
 
   /**
    * 获取股票数据组
diff --git a/src/stocks/sina/index.ts b/src/stocks/sina/index.ts
index 05caf16..78d10a6 100644
--- a/src/stocks/sina/index.ts
+++ b/src/stocks/sina/index.ts
@@ -9,11 +9,12 @@ import iconv from "@utils/iconv";
 
 // Types
 import Stock from "types/utils/stock";
+import StockApi from "types/stocks/index";
 
 /**
  * 新浪股票代码接口
  */
-class Sina extends Base {
+const Sina: StockApi = {
   /**
    * 获取股票数据
    * @param code 股票代码
@@ -35,7 +36,7 @@ class Sina extends Base {
     const data = (new SinaStockTransform(code, params));
 
     return data.getStock();
-  }
+  },
 
   /**
    * 获取股票数据组
diff --git a/src/stocks/tencent/index.ts b/src/stocks/tencent/index.ts
index a38d4a8..0bdd5c6 100644
--- a/src/stocks/tencent/index.ts
+++ b/src/stocks/tencent/index.ts
@@ -9,18 +9,12 @@ import iconv from "@utils/iconv";
 
 // Types
 import Stock from "types/utils/stock";
+import StockApi from "types/stocks/index";
 
 /**
  * 腾讯股票代码接口
  */
-class Tencent extends Base {
-  /**
-   * 构造函数
-   */
-  constructor() {
-    super();
-  }
-
+const Tencent: StockApi = {
   /**
    * 获取股票数据
    * @param code 股票代码
@@ -42,7 +36,7 @@ class Tencent extends Base {
     const data = (new TencentStockTransform(code, params));
 
     return data.getStock();
-  }
+  },
 
   /**
    * 获取股票数据组
diff --git a/src/stocks/xueqiu/index.ts b/src/stocks/xueqiu/index.ts
index ae5cfe1..034cb9a 100644
--- a/src/stocks/xueqiu/index.ts
+++ b/src/stocks/xueqiu/index.ts
@@ -8,28 +8,29 @@ import fetch from "@utils/fetch";
 
 // Types
 import Stock from "types/utils/stock";
+import StockApi from "types/stocks/index";
 import Dictionary from "types/utils/dictionary";
 
+let token: string = '';
+
 /**
  * 雪球股票代码接口
  */
-class Xueqiu extends Base {
-  public token: string = '';
-
+const Xueqiu: StockApi & { getToken(): Promise<string> } = {
   /**
    * 获取 Token
    */
-  async getToken() {
-    if (this.token !== '') return this.token;
+  async getToken(): Promise<string> {
+    if (token !== '') return token;
 
     const res = await fetch.get('https://xueqiu.com/');
     const cookies: string[] = res.headers['set-cookie'];
 
     const param: string = cookies.filter(key => key.includes('xq_a_token'))[0] || '';
-    this.token = param.split(';')[0] || '';
+    token = param.split(';')[0] || '';
 
-    return this.token;
-  }
+    return token;
+  },
 
   /**
    * 获取股票数据
@@ -51,7 +52,7 @@ class Xueqiu extends Base {
     const data = (new XueqiuStockTransform(code, params));
 
     return data.getStock();
-  }
+  },
 
   /**
    * 获取股票数据组
diff --git a/test/stocks/base/index.test.ts b/test/stocks/base/index.test.ts
index e876078..1d10890 100644
--- a/test/stocks/base/index.test.ts
+++ b/test/stocks/base/index.test.ts
@@ -3,13 +3,13 @@ const Base = require("stocks/base").default;
 
 describe("【基础】股票代码接口", () => {
   it("需要获取的股票代码", async () => {
-    await expect(new Base().getStock("SZ000000"))
+    await expect(Base.getStock("SZ000000"))
       .rejects
       .toThrow(new Error("未实现获取股票数据"));
   });
 
   it("需要获取的股票代码组", async () => {
-    await expect(new Base().getStocks(["SZ000000"]))
+    await expect(Base.getStocks(["SZ000000"]))
       .rejects
       .toThrow(new Error("未实现获取股票数据组"));
   });
diff --git a/test/stocks/netease/index.test.ts b/test/stocks/netease/index.test.ts
index 8997ca6..8f8c10d 100644
--- a/test/stocks/netease/index.test.ts
+++ b/test/stocks/netease/index.test.ts
@@ -3,13 +3,13 @@ const Netease = require("stocks/netease").default;
 
 describe("【网易】股票代码接口", () => {
   it("需要获取的股票代码", async () => {
-    await expect(new Netease().getStock("SH510500"))
+    await expect(Netease.getStock("SH510500"))
       .resolves
       .toMatchObject({ code: "SH510500", name: "500ETF" });
   });
 
   it("需要获取的股票代码组", async () => {
-    await expect((new Netease()).getStocks(["SH510500"]))
+    await expect(Netease.getStocks(["SH510500"]))
       .resolves
       .toMatchObject([{ code: "SH510500", name: "500ETF" }]);
   });
diff --git a/test/stocks/sina/index.test.ts b/test/stocks/sina/index.test.ts
index d05d465..01fdfe1 100644
--- a/test/stocks/sina/index.test.ts
+++ b/test/stocks/sina/index.test.ts
@@ -3,13 +3,13 @@ const Sina = require("stocks/sina").default;
 
 describe("【新浪】股票代码接口", () => {
   it("需要获取的股票代码", async () => {
-    await expect(new Sina().getStock("SH510500"))
+    await expect(Sina.getStock("SH510500"))
       .resolves
       .toMatchObject({ code: "SH510500", name: "500ETF" });
   });
 
   it("需要获取的股票代码组", async () => {
-    await expect((new Sina()).getStocks(["SH510500"]))
+    await expect(Sina.getStocks(["SH510500"]))
       .resolves
       .toMatchObject([{ code: "SH510500", name: "500ETF" }]);
   });
diff --git a/test/stocks/tencent/index.test.ts b/test/stocks/tencent/index.test.ts
index 8e5e960..e390ce7 100644
--- a/test/stocks/tencent/index.test.ts
+++ b/test/stocks/tencent/index.test.ts
@@ -3,13 +3,13 @@ const Tencent = require("stocks/tencent").default;
 
 describe("【腾讯】股票代码接口", () => {
   it("需要获取的股票代码", async () => {
-    await expect(new Tencent().getStock("SH510500"))
+    await expect(Tencent.getStock("SH510500"))
       .resolves
       .toMatchObject({ code: "SH510500", name: "500ETF" });
   });
 
   it("需要获取的股票代码组", async () => {
-    await expect((new Tencent()).getStocks(["SH510500"]))
+    await expect(Tencent.getStocks(["SH510500"]))
       .resolves
       .toMatchObject([{ code: "SH510500", name: "500ETF" }]);
   });
diff --git a/test/stocks/xueqiu/index.test.ts b/test/stocks/xueqiu/index.test.ts
index 5604f30..36e720d 100644
--- a/test/stocks/xueqiu/index.test.ts
+++ b/test/stocks/xueqiu/index.test.ts
@@ -3,19 +3,19 @@ const Xueqiu = require("stocks/xueqiu").default;
 
 describe("【雪球】股票代码接口", () => {
   it("获取 Token", async () => {
-    await expect(new Xueqiu().getToken())
+    await expect(Xueqiu.getToken())
       .resolves
       .toContain('xq_a_token');
   });
 
   it("需要获取的股票代码", async () => {
-    await expect(new Xueqiu().getStock("SH510500"))
+    await expect(Xueqiu.getStock("SH510500"))
       .resolves
       .toMatchObject({ code: "SH510500", name: "中证500ETF" });
   });
 
   it("需要获取的股票代码组", async () => {
-    await expect((new Xueqiu()).getStocks(["SH510500"]))
+    await expect(Xueqiu.getStocks(["SH510500"]))
       .resolves
       .toMatchObject([{ code: "SH510500", name: "中证500ETF" }]);
   });
diff --git a/types/stocks/index.d.ts b/types/stocks/index.d.ts
index ccdff95..16006af 100644
--- a/types/stocks/index.d.ts
+++ b/types/stocks/index.d.ts
@@ -1,6 +1,6 @@
 import Stock from '../utils/stock';
 
-declare class StockApi {
+export interface StockApi {
   /**
    * 获取股票数据
    * @param code 股票代码