diff --git a/utils/management/commands/cleantestcase.py b/utils/management/commands/cleantestcase.py
new file mode 100644
index 00000000..5b111e9f
--- /dev/null
+++ b/utils/management/commands/cleantestcase.py
@@ -0,0 +1,36 @@
+# coding=utf-8
+import shutil
+import os
+from django.conf import settings
+from django.core.management.base import BaseCommand
+from problem.models import Problem
+from contest.models import ContestProblem
+
+
+class Command(BaseCommand):
+    """
+    清除测试用例文件夹中无用的测试用例
+    """
+    def handle(self, *args, **options):
+        self.stdout.write(self.style.WARNING("Please backup your test case dir firstly!"))
+        problem_test_cases = [item.test_case_id for item in Problem.objects.all()]
+        contest_problem_test_cases = [item.test_case_id for item in ContestProblem.objects.all()]
+
+        test_cases = list(set(problem_test_cases + contest_problem_test_cases))
+        test_cases_dir = os.listdir(settings.TEST_CASE_DIR)
+
+        # 在 test_cases_dir 而不在 test_cases 中的
+        dir_to_be_removed = list(set(test_cases_dir).difference(set(test_cases)))
+        if dir_to_be_removed:
+            self.stdout.write(self.style.ERROR("Following dirs will be removed: "))
+            for item in dir_to_be_removed:
+                self.stdout.write(self.style.WARNING(os.path.join(settings.TEST_CASE_DIR, item)))
+            self.stdout.write(self.style.ERROR("Input yes to confirm: "))
+            if raw_input() == "yes":
+                for item in dir_to_be_removed:
+                    shutil.rmtree(os.path.join(settings.TEST_CASE_DIR, item), ignore_errors=True)
+                self.stdout.write(self.style.SUCCESS("Done"))
+            else:
+                self.stdout.write(self.style.SUCCESS("Nothing happened"))
+        else:
+            self.stdout.write(self.style.SUCCESS("Test case dir is clean, nothing to do"))
diff --git a/utils/management/commands/initadmin.py b/utils/management/commands/initadmin.py
index 94d2c3ae..64cc2672 100644
--- a/utils/management/commands/initadmin.py
+++ b/utils/management/commands/initadmin.py
@@ -1,5 +1,5 @@
 # coding=utf-8
-from django.core.management.base import BaseCommand, CommandError
+from django.core.management.base import BaseCommand
 from account.models import User, SUPER_ADMIN, UserProfile
 from utils.shortcuts import rand_str
 
@@ -11,6 +11,6 @@ class Command(BaseCommand):
         user.set_password(rand_password)
         user.save()
         UserProfile.objects.create(user=user)
-        self.stdout.write("Successfully created super admin user.\nUsername: root\nPassword: %s\n"
-                          "Remember to change password and turn on two factors auth "
-                          "after installation." % rand_password)
+        self.stdout.write(self.style.SUCCESS("Successfully created super admin user.\nUsername: root\nPassword: %s\n"
+                                             "Remember to change password and turn on two factors auth "
+                                             "after installation." % rand_password))