diff --git a/app/Service/ContactApplyService.php b/app/Service/ContactApplyService.php
new file mode 100644
index 0000000..4dff4a3
--- /dev/null
+++ b/app/Service/ContactApplyService.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace App\Service;
+
+use App\Model\UsersFriendsApply;
+
+class ContactApplyService
+{
+    /**
+     * 创建好友申请
+     *
+     * @param int    $user_id   申请人用户ID
+     * @param int    $friend_id 朋友ID
+     * @param string $remark    申请备注
+     * @return bool
+     */
+    public function create(int $user_id, int $friend_id, string $remark)
+    {
+        // 查询最后一次联系人申请
+        $result = UsersFriendsApply::where('user_id', $user_id)->where('friend_id', $friend_id)->orderBy('id', 'desc')->first();
+        if ($result && $result->status == 0) {
+            $result->remarks    = $remark;
+            $result->updated_at = date('Y-m-d H:i:s');
+            $result->save();
+            return true;
+        }
+
+        $result = UsersFriendsApply::create([
+            'user_id'    => $user_id,
+            'friend_id'  => $friend_id,
+            'status'     => 0,
+            'remarks'    => $remark,
+            'created_at' => date('Y-m-d H:i:s'),
+            'updated_at' => date('Y-m-d H:i:s')
+        ]);
+
+        return (bool)$result;
+    }
+
+    /**
+     * 同意好友申请
+     */
+    public function accept()
+    {
+
+    }
+
+    /**
+     * 拒绝好友申请
+     */
+    public function decline()
+    {
+
+    }
+}