diff --git a/src/main/java/org/jcnc/snow/compiler/lexer/scanners/UnknownTokenScanner.java b/src/main/java/org/jcnc/snow/compiler/lexer/scanners/UnknownTokenScanner.java
index 8f8a940..b7cc295 100644
--- a/src/main/java/org/jcnc/snow/compiler/lexer/scanners/UnknownTokenScanner.java
+++ b/src/main/java/org/jcnc/snow/compiler/lexer/scanners/UnknownTokenScanner.java
@@ -50,6 +50,6 @@ public class UnknownTokenScanner extends AbstractTokenScanner {
         if (lexeme.isEmpty())
             lexeme = String.valueOf(ctx.advance());
         // 抛出词法异常，并带上错误片段与具体位置
-        throw new LexicalException("Illegal character sequence '" + lexeme + "'", line, col);
+        throw new LexicalException("词法错误：非法字符序列 '" + lexeme + "'", line, col);
     }
 }