diff --git a/SequentialRegressionTest.py b/SequentialRegressionTest.py
index ca10b68..4e99759 100644
--- a/SequentialRegressionTest.py
+++ b/SequentialRegressionTest.py
@@ -109,7 +109,11 @@ def build_compile_cmd(args):
     """
     suffix = " --rebuild-includes" if args.rebuild_includes else ""
     if args.exe:
-        return f'"{args.exe}" --project {{project}} --clean{suffix}'
+        # 必须绝对化：每个项目都在自己的目录里执行（cwd=项目目录），相对 --exe 会按各自
+        # 层级解析到不同位置——根级 escape 项目只深一层能命中，Test/NewTest 深两层就报
+        # "The system cannot find the path specified."（实测踩过）。
+        exe_abs = os.path.abspath(args.exe)
+        return f'"{exe_abs}" --project {{project}} --clean{suffix}'
     if args.compiler:
         return args.compiler
     return f'D:\\Python312\\python.exe -u "{PROJECTRANS}" --project {{project}} --clean{suffix}'
@@ -225,6 +229,9 @@ def main():
     parser.add_argument("--only", default=None,
                         help="只跑指定项目（逗号分隔，名字即目录名），忽略 README 顺序")
     args = parser.parse_args()
+    if args.exe and not os.path.isfile(os.path.abspath(args.exe)):
+        print(f"错误: --exe 不存在: {os.path.abspath(args.exe)}")
+        return 1
     compile_cmd = build_compile_cmd(args)
 
     print("=" * 70)
diff --git a/run_lifetime_negative_tests.py b/run_lifetime_negative_tests.py
index f390361..21e07eb 100644
--- a/run_lifetime_negative_tests.py
+++ b/run_lifetime_negative_tests.py
@@ -63,6 +63,11 @@ def main() -> int:
                     help="每次编译追加 --rebuild-includes（全量重编 includes）")
     args = ap.parse_args()
 
+    # --exe 绝对化 + 存在性校验：编译以 cwd=项目目录 执行，相对路径会随项目层级错位
+    exe_abs = os.path.abspath(args.exe)
+    if not os.path.isfile(exe_abs):
+        print(f"错误: --exe 不存在: {exe_abs}")
+        return 1
     names = [n.strip() for n in args.only.split(",") if n.strip()] if args.only else NEGATIVE_PROJECTS
     suffix = " --rebuild-includes" if args.rebuild_includes else ""
 
@@ -76,7 +81,7 @@ def main() -> int:
             skipped.append((name, "找不到 project.json / project.vpj"))
             print(f"[SKIP] {name}: 找不到 project.json / project.vpj")
             continue
-        cmd = f'"{args.exe}" --project "{proj_file}" --clean{suffix}'
+        cmd = f'"{exe_abs}" --project "{proj_file}" --clean{suffix}'
         try:
             r = subprocess.run(cmd, shell=True, capture_output=True, text=True,
                                encoding='utf-8', errors='replace',