diff --git a/source/03_language_reference/06_Declarations.md b/source/03_language_reference/06_Declarations.md
index 4f6482b7..299f0f94 100755
--- a/source/03_language_reference/06_Declarations.md
+++ b/source/03_language_reference/06_Declarations.md
@@ -660,9 +660,9 @@ Swift 定义了 `Never` 类型,它表示函数或者方法不会返回给它
#### function-signature {#function-signature}
>
>
-> *函数签名* → [参数子句列表](#parameter-clauses) **throws**可选 [函数结果](#function-result)可选
+> *函数签名* → [参数子句列表](#parameter-clauses) **async**可选 **throws**可选 [函数结果](#function-result)可选
>
-> *函数签名* → [参数子句列表](#parameter-clauses) **rethrows** [函数结果](#function-result)可选
+> *函数签名* → [参数子句列表](#parameter-clauses) **async**可选 **rethrows** [函数结果](#function-result)可选
>
>
#### function-result {#function-result}