diff --git a/apps/common/utils/random.py b/apps/common/utils/random.py
index 267de8d22..166453da6 100644
--- a/apps/common/utils/random.py
+++ b/apps/common/utils/random.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 #
 import random
+import secrets
 import socket
 import string
 import struct
@@ -18,31 +19,24 @@ def random_ip():
 
 
 def random_string(length: int, lower=True, upper=True, digit=True, special_char=False, symbols=string_punctuation):
-    random.seed()
-    args_names = ['lower', 'upper', 'digit']
-    args_values = [lower, upper, digit]
-    args_string = [string.ascii_lowercase, string.ascii_uppercase, string.digits]
-    args_string_map = dict(zip(args_names, args_string))
-    kwargs = dict(zip(args_names, args_values))
-    kwargs_keys = list(kwargs.keys())
-    kwargs_values = list(kwargs.values())
-    args_true_count = len([i for i in kwargs_values if i])
+    if not any([lower, upper, digit]):
+        raise ValueError('At least one of `lower`, `upper`, `digit` must be `True`')
+    if length < 4:
+        raise ValueError('The length of the string must be greater than 3')
 
-    assert any(kwargs_values), f'Parameters {kwargs_keys} must have at least one `True`'
-    assert length >= args_true_count, f'Expected length >= {args_true_count}, bug got {length}'
-
-    chars = ''.join([args_string_map[k] for k, v in kwargs.items() if v])
-    password = list(random.choice(chars) for i in range(length))
+    chars_map = (
+        (lower, string.ascii_lowercase),
+        (upper, string.ascii_uppercase),
+        (digit, string.digits),
+    )
+    chars = ''.join([i[1] for i in chars_map if i[0]])
+    texts = list(secrets.choice(chars) for __ in range(length))
 
     if special_char:
-        special_num = length // 16 + 1
-        special_index = []
-        for i in range(special_num):
-            index = random.randint(1, length - 1)
-            if index not in special_index:
-                special_index.append(index)
-        for i in special_index:
-            password[i] = random.choice(symbols)
+        symbol_num = length // 16 + 1
+        symbol_index = random.choices(list(range(1, length - 1)), k=symbol_num)
+        for i in symbol_index:
+            texts[i] = secrets.choice(symbols)
 
-    password = ''.join(password)
-    return password
+    text = ''.join(texts)
+    return text