diff --git a/tests/conftest.py b/tests/conftest.py
index 2a5d748..9958c74 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -118,7 +118,7 @@ def pytest_sessionfinish(session):
     now = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
 
     html = _build_cn_report_html(total, passed, failed, skipped, pass_rate, cases, now)
-    (report_dir / "report_cn.html").write_text(html, encoding="utf-8")
+    (report_dir / "report_cn.html").write_text(html, encoding="utf-8-sig")
 
 
 def _resolve_cn_name(session, func_name: str) -> str:
@@ -154,7 +154,7 @@ def _resolve_cn_name(session, func_name: str) -> str:
     now = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
 
     html = _build_cn_report_html(total, passed, failed, skipped, pass_rate, cases, now)
-    (report_dir / "report_cn.html").write_text(html, encoding="utf-8")
+    (report_dir / "report_cn.html").write_text(html, encoding="utf-8-sig")
 
 
 def _build_cn_report_html(total, passed, failed, skipped, rate, cases, now):