diff --git a/common/utils.py b/common/utils.py
index 0e6839d..4632da7 100644
--- a/common/utils.py
+++ b/common/utils.py
@@ -771,3 +771,10 @@ def get_ns_path(in_china=None, enable_wildcard=None, ns_ip_list=None):
     ns_data = '\n'.join(ns_ip_list)
     save_to_file(path, ns_data)
     return path
+
+
+def init_table(domain):
+    db = Database()
+    db.drop_table(domain)
+    db.create_table(domain)
+    db.close()
diff --git a/oneforall.py b/oneforall.py
index 8b5b65c..f65048e 100644
--- a/oneforall.py
+++ b/oneforall.py
@@ -147,6 +147,8 @@ class OneForAll(object):
         :return: subdomain results
         :rtype: list
         """
+        utils.init_table(self.domain)
+
         if not self.access_internet:
             logger.log('ALERT', 'Because it cannot access the Internet, '
                                 'OneForAll will not execute the subdomain collection module!')