diff --git a/app/test/test_bug551_DingZeYu.py b/app/test/test_bug551_DingZeYu.py
index cc44fd2..015fb5a 100644
--- a/app/test/test_bug551_DingZeYu.py
+++ b/app/test/test_bug551_DingZeYu.py
@@ -33,4 +33,5 @@ def test_bug551(driver, URL):
         font_weight = word.value_of_css_property("font-weight")
         assert font_weight == expected_font_weight, f"选中部分的单词的字体样式错误"
 
-    time.sleep(5)
\ No newline at end of file
+    time.sleep(5)
+    driver.quit()