QQ看共同好友的办法，首先需要登录QQ，然后点击头像查看资料，点击四叶草图标，进入首页，点击好友，选择可能认识的人就可以看到啦，具体操作步骤如下：
1、首先，在电脑上登录QQ，点击自己或任意一个好友的头像查看资料。
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2、点击头像查看资料后，在资料栏找到底部的四叶草图标（朋友网），点击进入。
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3、进入朋友网首页后，点击【好友】。
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4、进入好友页面后，可以看到最近的好友申请，在好友申请一栏就可以看到对方与自己的共同好友，点击上面的数字就可以查看共同好友啦，点击【可能认识的人】。
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5、然后系统自动列出了一些可能认识的人可以添加，在每个可能认识的人名字下方，都会显示自己跟对方共同好友的数量。
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6、点击共同好友数字后，就可以查看到自己与对方的共同好友有哪些。
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注意事项：
1、查看了共同好友后，可以点击想添加的人员进行好友申请。
2、要点击四叶草进入朋友圈才能看到共同好友，以及沟通好友的明细。