diff --git a/DrissionPage/_elements/chromium_element.py b/DrissionPage/_elements/chromium_element.py
index ebf0796..71353d8 100644
--- a/DrissionPage/_elements/chromium_element.py
+++ b/DrissionPage/_elements/chromium_element.py
@@ -1374,9 +1374,11 @@ def convert_argument(arg):
     from math import inf
     if arg == inf:
         return {'unserializableValue': 'Infinity'}
-    if arg == -inf:
+    elif arg == -inf:
         return {'unserializableValue': '-Infinity'}
 
+    raise TypeError(f'不支持参数{arg}的类型：{type(arg)}')
+
 
 class Pseudo(object):
     def __init__(self, ele):