diff --git a/examples/secp256k1-transfer/index.tsx b/examples/secp256k1-transfer/index.tsx
deleted file mode 100644
index a664caa99..000000000
--- a/examples/secp256k1-transfer/index.tsx
+++ /dev/null
@@ -1,73 +0,0 @@
-import React, { useEffect, useState } from "react";
-import ReactDOM from "react-dom";
-import { Script } from "@ckb-lumos/lumos";
-import { capacityOf, generateAccountFromPrivateKey, transfer } from "./lib";
-
-const app = document.getElementById("root");
-ReactDOM.render(, app);
-
-export function App() {
- const [privKey, setPrivKey] = useState("");
- const [fromAddr, setFromAddr] = useState("");
- const [fromLock, setFromLock] = useState