diff --git a/scripts/run_all_tests.sh b/scripts/run_all_tests.sh
new file mode 100644
index 0000000..ad67323
--- /dev/null
+++ b/scripts/run_all_tests.sh
@@ -0,0 +1,48 @@
+#!/bin/bash
+
+# 批量测试所有.sy文件的语法解析
+
+test_dir="/home/lingli/nudt-compiler-cpp/test/test_case/functional"
+compiler="/home/lingli/nudt-compiler-cpp/build/bin/compiler"
+
+if [ ! -f "$compiler" ]; then
+    echo "错误：编译器不存在，请先构建项目"
+    exit 1
+fi
+
+success_count=0
+failed_count=0
+failed_tests=()
+
+echo "开始测试所有.sy文件的语法解析..."
+echo "="
+
+# 获取所有.sy文件并排序
+for test_file in $(find "$test_dir" -name "*.sy" | sort); do
+    echo "测试: $(basename "$test_file")"
+    
+    # 运行解析测试，将输出重定向到/dev/null
+    "$compiler" --emit-parse-tree "$test_file" > /dev/null 2>&1
+    
+    if [ $? -eq 0 ]; then
+        echo "  ✓ 成功"
+        ((success_count++))
+    else
+        echo "  ✗ 失败"
+        ((failed_count++))
+        failed_tests+=($(basename "$test_file"))
+    fi
+done
+
+echo "="
+echo "测试完成！"
+echo "总测试数: $((success_count + failed_count))"
+echo "成功: $success_count"
+echo "失败: $failed_count"
+
+if [ $failed_count -gt 0 ]; then
+    echo "失败的测试用例:"
+    for test in "${failed_tests[@]}"; do
+        echo "  - $test"
+    done
+fi
diff --git a/src/antlr4/SysY.g4 b/src/antlr4/SysY.g4
index 5115f15..d36eafa 100644
--- a/src/antlr4/SysY.g4
+++ b/src/antlr4/SysY.g4
@@ -171,23 +171,76 @@ blockItem
     ;
 
 stmt
-    : returnStmt
+    : assignStmt
+    | returnStmt
+    | blockStmt
+    | ifStmt
+    | whileStmt
+    | breakStmt
+    | continueStmt
+    | expStmt
+    ;
+
+expStmt
+    : exp SEMICOLON
+    ;
+
+assignStmt
+    : lValue ASSIGN exp SEMICOLON
     ;
 
 returnStmt
     : RETURN (exp)? SEMICOLON
     ;
 
-exp
-    : LPAREN exp RPAREN          # parenExp
-    | lValue                     # lValueExp
-    | number                     # numberExp
+ifStmt
+    : IF LPAREN exp RPAREN stmt (ELSE stmt)?
+    ;
+
+whileStmt
+    : WHILE LPAREN exp RPAREN stmt
     ;
 
+breakStmt
+    : BREAK SEMICOLON
+    ;
+
+continueStmt
+    : CONTINUE SEMICOLON
+    ;
+
+// 表达式
 lValue
     : ID (LBRACK exp RBRACK)*
     ;
 
+exp
+    : LPAREN exp RPAREN          # parenExp
+    | lValue                     # lValueExp
+    | number                     # numberExp
+    | ID LPAREN (funcRParams)? RPAREN # funcCallExp
+    | NOT exp                    # notExp
+    | ADD exp                    # unaryAddExp
+    | SUB exp                    # unarySubExp
+    | exp MUL exp                # mulExp
+    | exp DIV exp                # divExp
+    | exp MOD exp                # modExp
+    | exp ADD exp                # addExp
+    | exp SUB exp                # subExp
+    | exp LT exp                 # ltExp
+    | exp LE exp                 # leExp
+    | exp GT exp                 # gtExp
+    | exp GE exp                 # geExp
+    | exp EQ exp                 # eqExp
+    | exp NE exp                 # neExp
+    | exp AND exp                # andExp
+    | exp OR exp                 # orExp
+    ;
+
+funcRParams
+    : exp (COMMA exp)*
+    ;
+
 number
     : ILITERAL
     | FLITERAL