diff --git a/sdk/README.md b/sdk/README.md
index 72865df..ce0b0f7 100644
--- a/sdk/README.md
+++ b/sdk/README.md
@@ -207,10 +207,4 @@ func main() {
 | RefundFee   | 退款金额       |
 | Timestamp   | 时间戳         |
 
----
-
-## 参考资料
-
-- [Go 语言单例模式](https://www.runoob.com/w3cnote/go-singleton-pattern.html)
-- [Go 语言字符串拼接](https://www.runoob.com/go/go-strings-concat.html)
-- [Go 语言排序](https://www.runoob.com/go/go-slices-sort.html)
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+---
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