diff --git a/cards_tools.py b/cards_tools.py
new file mode 100644
index 0000000..893081e
--- /dev/null
+++ b/cards_tools.py
@@ -0,0 +1,126 @@
+
+card_list = []
+
+def show_menu():
+
+    print("*" * 50)
+    print("欢迎使用【名片管理系统】".center(40) + "")  # 居中菜单标题
+    print("1.新建名片")
+    print("2.显示全部名片")
+    print("3.查询名片")
+    print("4.退出系统")
+    print("*" * 50)
+
+
+def new_a_card():
+
+    print("=" * 50)
+    print("新增名片 请输入信息".center(70))
+
+    name = input("请输入您的姓名：")
+    phone = input("请输入您的电话：")
+    qq = input("请输入您的qq号：")
+    email = input("请输入您的邮箱：")
+
+
+    information = {
+        "姓名": name,
+        "电话": phone,
+        "qq号": qq,
+        "email": email
+    }
+
+
+    card_list.append(information)
+
+
+    print("添加%s的名片成功" % name)
+
+
+def show_all_cards():
+
+    print("=" * 50)
+    print("显示全部名片".center(70))
+
+
+    if len(card_list) == 0:
+        print("名片系统为空")
+        return
+
+
+    print("姓名\t\t\t\t电话\t\t\t\tqq号\t\t\t\temail")
+    print("=" * 50)
+
+
+    for i in card_list:
+        print("%s\t\t\t\t%s\t\t\t\t%s\t\t\t\t%s" % (i["姓名"], i["电话"], i["qq号"], i["email"]))
+
+
+    print("=" * 50)
+
+
+def search_card():
+
+    print("=" * 50)
+    print("查询名片".center(70))
+
+
+    if len(card_list) == 0:
+        print("名片系统为空")
+        return
+
+
+    search_name = input("请输入要查询的姓名：")
+
+
+    for i in card_list:
+
+        if i["姓名"] == search_name:
+            print("姓名\t\t\t\t电话\t\t\t\tqq号\t\t\t\temail")
+            print("=" * 50)
+            print("%s\t\t\t\t%s\t\t\t\t%s\t\t\t\t%s" % (i["姓名"], i["电话"], i["qq号"], i["email"]))
+            print("=" * 50)
+
+            # 三种操作
+            deal_search_one(i)
+            break
+    else:
+        print("查无此人")
+
+
+def deal_search_one(search_dictionary):
+
+    while True:
+        function_choice = input("请输入想要执行的操作：1.修改 2.删除 3.返回上级目录")
+
+        if function_choice == "1":
+            print("修改名片".center(70))
+            search_dictionary["姓名"] = new_input(search_dictionary["姓名"], "姓名：")
+            search_dictionary["电话"] = new_input(search_dictionary["电话"], "电话：")
+            search_dictionary["qq号"] = new_input(search_dictionary["qq号"], "qq号：")
+            search_dictionary["email"] = new_input(search_dictionary["email"], "邮箱：")
+            break
+
+        elif function_choice == "2":
+            print("删除名片".center(70))
+            card_list.remove(search_dictionary)
+            break
+
+        elif function_choice == "3":
+            return
+
+        else:
+            print("没有此操作 请重新输入")
+
+    print("处理完成")
+
+
+def new_input(value, tip_message):
+
+    input_thing = input(tip_message)
+
+
+    if len(input_thing) > 0:
+        return input_thing
+    else:
+        return value
\ No newline at end of file