diff --git a/ContactManager.cpp b/ContactManager.cpp
new file mode 100644
index 0000000..d4d3bbe
--- /dev/null
+++ b/ContactManager.cpp
@@ -0,0 +1,50 @@
+#include "ContactManager.h"
+#include <iostream>
+
+void ContactManager::addContact() {
+    Contact newContact;
+    std::cout << "请输入联系人姓名： ";
+    std::cin >> newContact.name;
+    std::cout << "请输入联系人电话： ";
+    std::cin >> newContact.phone;
+    newContact.id = contacts.size() + 1;
+    contacts.push_back(newContact);
+}
+
+void ContactManager::displayContacts() const {
+    std::cout << "通讯录如下：" << std::endl;
+    for (const auto& contact : contacts) {
+        std::cout << "ID：" << contact.id << ", 姓名： " << contact.name << ", 电话： " << contact.phone << std::endl;
+    }
+}
+
+void ContactManager::findContact() const {
+    int id;
+    std::cout << "请输入要查找的联系人ID： ";
+    std::cin >> id;
+
+    for (const auto& contact : contacts) {
+        if (contact.id == id) {
+            std::cout << "找到联系人：ID： " << contact.id << ", 姓名： " << contact.name << ", 电话： " << contact.phone << std::endl;
+            return;
+        }
+    }
+
+    std::cout << "未找到联系人。" << std::endl;
+}
+
+void ContactManager::deleteContact() {
+    int id;
+    std::cout << "请输入要删除的联系人ID： ";
+    std::cin >> id;
+
+    for (auto it = contacts.begin(); it != contacts.end(); ++it) {
+        if (it->id == id) {
+            contacts.erase(it);
+            std::cout << "已删除联系人。" << std::endl;
+            return;
+        }
+    }
+
+    std::cout << "未找到联系人。" << std::endl;
+}
\ No newline at end of file