diff --git a/factorExtractor.py b/factorExtractor.py
index 669ae79..4c3ad59 100644
--- a/factorExtractor.py
+++ b/factorExtractor.py
@@ -1,6 +1,6 @@
-import json
-import pathlib
+import queue
 import re
+import threading
 import time
 from collections import Counter
 from typing import Dict, List, Tuple
@@ -9,6 +9,7 @@ import pandas as pd
 from sqlalchemy import create_engine
 
 import GlobalConstants
+from ConfigOperator import ConfigOperator
 from FileOperator import FileOperator
 from models.RepoInfo import RepoInfo
 from MySQLOperator import MySQLOperator
@@ -518,16 +519,16 @@ def factor_extractor(function_id_1: int, function_id_2: int, mysqlOp: MySQLOpera
     }
 
 
-if __name__ == "__main__":
-    repoInfos: List[RepoInfo] = FileOperator("factor_repos").load_repos()
-    for repoInfo in repoInfos:
+def run(q):
+    while not q.empty():
+        repoInfo: RepoInfo = q.get()
         mysqlOp: MySQLOperator = MySQLOperator(
             config_path="config.yml", autocommit=True, repoInfo=repoInfo
         )
         clone_relations_function = mysqlOp.tablename_dict["clone_relations_function"]
         sql_all_clones = """
-                select distinct function_id_1,function_id_2 from `{tablename}`
-            """.format(
+                            select distinct function_id_1,function_id_2 from `{tablename}`
+                        """.format(
             tablename=clone_relations_function
         )
         while True:
@@ -548,35 +549,35 @@ if __name__ == "__main__":
             repo_id=repoInfo.id, separator=GlobalConstants.SEPARATOR
         )
         sql_result = """
-                create table if not exists `{tablename}` (
-                    `id` int(11) NOT NULL AUTO_INCREMENT,
-                    `function_id_1` int(11) NULL,
-                    `function_id_2` int(11) NULL,
-                    `similarity` int(11) NULL,
-                    `degree_diff` int(11) NULL,
-                    `is_test` int(11) NULL,
-                    `file_distance` int(11) NULL,
-                    `method_name_same` int(11) NULL,
-                    `history_change_sum` int(11) NULL,
-                    `co_change` int(11) NULL,
-                    `consistant_change` int(11) NULL,
-                    `main_author_same` int(11) NULL,
-                    `author_exp_sum` int(11) NULL,
-                    PRIMARY KEY (`id`),
-                    INDEX(`function_id_1`) USING BTREE,
-                    INDEX(`function_id_2`) USING BTREE,
-                    INDEX(`similarity`) USING BTREE,
-                    INDEX(`degree_diff`) USING BTREE,
-                    INDEX(`is_test`) USING BTREE,
-                    INDEX(`file_distance`) USING BTREE,
-                    INDEX(`method_name_same`) USING BTREE,
-                    INDEX(`history_change_sum`) USING BTREE,
-                    INDEX(`co_change`) USING BTREE,
-                    INDEX(`consistant_change`) USING BTREE,
-                    INDEX(`main_author_same`) USING BTREE,
-                    INDEX(`author_exp_sum`) USING BTREE
-                )
-        """.format(
+                            create table if not exists `{tablename}` (
+                                `id` int(11) NOT NULL AUTO_INCREMENT,
+                                `function_id_1` int(11) NULL,
+                                `function_id_2` int(11) NULL,
+                                `similarity` int(11) NULL,
+                                `degree_diff` int(11) NULL,
+                                `is_test` int(11) NULL,
+                                `file_distance` int(11) NULL,
+                                `method_name_same` int(11) NULL,
+                                `history_change_sum` int(11) NULL,
+                                `co_change` int(11) NULL,
+                                `consistant_change` int(11) NULL,
+                                `main_author_same` int(11) NULL,
+                                `author_exp_sum` int(11) NULL,
+                                PRIMARY KEY (`id`),
+                                INDEX(`function_id_1`) USING BTREE,
+                                INDEX(`function_id_2`) USING BTREE,
+                                INDEX(`similarity`) USING BTREE,
+                                INDEX(`degree_diff`) USING BTREE,
+                                INDEX(`is_test`) USING BTREE,
+                                INDEX(`file_distance`) USING BTREE,
+                                INDEX(`method_name_same`) USING BTREE,
+                                INDEX(`history_change_sum`) USING BTREE,
+                                INDEX(`co_change`) USING BTREE,
+                                INDEX(`consistant_change`) USING BTREE,
+                                INDEX(`main_author_same`) USING BTREE,
+                                INDEX(`author_exp_sum`) USING BTREE
+                            )
+                    """.format(
             tablename=factors
         )
         mysqlOp.cursor.execute(sql_result)
@@ -597,6 +598,32 @@ if __name__ == "__main__":
             index=False,
             if_exists="append",
         )
+        q.task_done()
         print(
             "finish extract factors in repo: {git_url}".format(git_url=repoInfo.git_url)
         )
+
+
+if __name__ == "__main__":
+    repoInfos: List[RepoInfo] = FileOperator("factor_repos").load_repos()
+    mysqlOp = MySQLOperator(config_path=GlobalConstants.CONFIG_PATH)
+    workQueue = queue.Queue()
+    for repoInfo in repoInfos:
+        # query the id of this repository
+        repo_id = mysqlOp.get_repo_id_by_names(repoInfo=repoInfo)
+        repoInfo.id = repo_id
+        workQueue.put(repoInfo)
+    threads = []
+    for i in range(
+        int(
+            ConfigOperator(config_path=GlobalConstants.CONFIG_PATH).read_config()[
+                "RCD"
+            ]["thread_num"]
+        )
+    ):
+        t = threading.Thread(target=run, args=(workQueue,))
+        t.start()
+        threads.append(t)
+    for t in threads:
+        t.join()
+    print("Finish")