diff --git a/src/parser/lexical_analyzer.l b/src/parser/lexical_analyzer.l
index 28bf17a282101617d4467bf2c85722e22a69d3e3..e3d89c994763b296090d993da3847e014f0fc211 100644
--- a/src/parser/lexical_analyzer.l
+++ b/src/parser/lexical_analyzer.l
@@ -34,7 +34,7 @@ void pass_node(char *text){
 \>=	{pos_start = pos_end; pos_end += 2; pass_node(yytext); return GTE;}
 ==	{pos_start = pos_end; pos_end += 2; pass_node(yytext); return EQ;}
 !=	{pos_start = pos_end; pos_end += 2; pass_node(yytext); return NEQ;}
-=	{pos_start = pos_end; pos_end += 1; pass_node(yytext); return ASSIN;}
+=	{pos_start = pos_end; pos_end += 1; pass_node(yytext); return ASSIGN;}
 ;	{pos_start = pos_end; pos_end += 1; pass_node(yytext); return SEMICOLON;}
 ,	{pos_start = pos_end; pos_end += 1; pass_node(yytext); return COMMA;}
  /* TODO: phase1. 请在这里补充其他的词法规则 */
diff --git a/src/parser/syntax_analyzer.y b/src/parser/syntax_analyzer.y
index 43adce05fec6760f7e666ce831f48d5d4b867572..c31c33e14860f360da8e70f73b77dcbb37a2ff35 100644
--- a/src/parser/syntax_analyzer.y
+++ b/src/parser/syntax_analyzer.y
@@ -48,7 +48,7 @@ syntax_tree_node *node(const char *node_name, int children_num, ...);
 %token <node> GTE
 %token <node> EQ
 %token <node> NEQ
-%token <node> ASSIN
+%token <node> ASSIGN
 %token <node> SEMICOLON
 %token <node> COMMA
 %token <node> LPARENTHESE