diff --git a/compiler/erg_parser/lex.rs b/compiler/erg_parser/lex.rs
index 6acdfba4f..4201b12c7 100644
--- a/compiler/erg_parser/lex.rs
+++ b/compiler/erg_parser/lex.rs
@@ -562,6 +562,7 @@ impl Lexer /*<'a>*/ {
                         'r' => s.push('\r'),
                         'n' => s.push('\n'),
                         '\'' => s.push('\''),
+                        '"' => s.push('"'),
                         't' => s.push_str("    "), // tab is invalid, so changed into 4 whitespace
                         '\\' => s.push('\\'),
                         _ => {
diff --git a/compiler/erg_parser/tests/test1_basic_syntax.er b/compiler/erg_parser/tests/test1_basic_syntax.er
index ffd77c3fc..8b8d5a9b9 100644
--- a/compiler/erg_parser/tests/test1_basic_syntax.er
+++ b/compiler/erg_parser/tests/test1_basic_syntax.er
@@ -6,7 +6,7 @@ a, _, ...b = five_elem_tuple
 f x, y =
     x + y
 if! True, do!:
-    print! "\\hello, world\""
+    print! "\"\\hello, world\\\""
     10.times! do!:
         if! x.y.z, do!:
             print! ""
diff --git a/compiler/erg_parser/tests/test3_literal_syntax.er b/compiler/erg_parser/tests/test3_literal_syntax.er
index 2bbae6203..d9eb12d5b 100644
--- a/compiler/erg_parser/tests/test3_literal_syntax.er
+++ b/compiler/erg_parser/tests/test3_literal_syntax.er
@@ -9,7 +9,7 @@
 0.00, -0.0, .1, 400.
 
 # Str Literal
-"", "a", "こんにちは", "\" \\ "
+"", "a", "こんにちは", "\"\\", "\"\'\\\0\r\n\t"
 
 # Boolean Litteral
 True, False
diff --git a/compiler/erg_parser/tests/tokenize_test.rs b/compiler/erg_parser/tests/tokenize_test.rs
index 47744926a..6371de344 100644
--- a/compiler/erg_parser/tests/tokenize_test.rs
+++ b/compiler/erg_parser/tests/tokenize_test.rs
@@ -37,7 +37,7 @@ fn test_lexer_for_basic() -> ParseResult<()> {
         (Comma, ","),
         (UBar, "_"),
         (Comma, ","),
-        (Spread, "..."), // EllipsisLit
+        (EllipsisLit, "..."),
         (Symbol, "b"),
         (Equal, "="),
         (Symbol, "five_elem_tuple"),
@@ -62,7 +62,7 @@ fn test_lexer_for_basic() -> ParseResult<()> {
         (Newline, newline),
         (Indent, "    "),
         (Symbol, "print!"),
-        (StrLit, "\"\\\\hello, world\\\"\""),
+        (StrLit, "\"\"\\hello, world\\\"\""),
         (Newline, newline),
         (NatLit, "10"),
         (Dot, "."),
@@ -264,7 +264,9 @@ fn test_lexer_for_literals() -> ParseResult<()> {
         (Comma, ","),
         (StrLit, "\"こんにちは\""),
         (Comma, ","),
-        (StrLit, "\"\\\" \\\\ \""),
+        (StrLit, "\"\"\\\""),
+        (Comma, ","),
+        (StrLit, "\"\"\'\\\0\r\n    \""),
         (Newline, newline),
         (Newline, newline),
         (Newline, newline),