diff --git a/docs/Snow-Lang-Syntax/Snow-Lang-Grammar-Specification.md b/docs/Snow-Lang-Syntax/Snow-Lang-Grammar-Specification.md
index d8a816a..64d2af4 100644
--- a/docs/Snow-Lang-Syntax/Snow-Lang-Grammar-Specification.md
+++ b/docs/Snow-Lang-Syntax/Snow-Lang-Grammar-Specification.md
@@ -321,10 +321,8 @@ Snow-Lang 支持下列**数值类型**，用于声明变量、参数、结构体
 |----|--------|----------|
 | b  | byte   | 7b, -2B  |
 | s  | short  | 123s     |
-| i  | int    | 100i     |
 | l  | long   | 5l, 123L |
 | f  | float  | 3.14f    |
-| d  | double | 1.0d     |
 
 - 没有后缀的整数字面量自动为 `int`。
 - 没有后缀的浮点字面量自动为 `double`。