diff --git a/README.md b/README.md
index 078ed28..57b05d4 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,5 @@
 
 For usage, please reference [sm2_test.js](https://github.com/emmansun/sm2js/blob/master/src/sm2_test.js "sm2_test.js")
 
-[一种使用nodejs SM4-ECB和sjcl gcm的SM4-GCM实现](https://gist.github.com/emmansun/2eb37257cfe6ed561d1668f720f51030)
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 [npm-downloads-image]: https://badgen.net/npm/dm/gmsm-sm2js
 [npm-url]: https://npmjs.org/package/gmsm-sm2js