手机不能设置QQ禁止添加好友，因为手机QQ暂时没有推出禁止添加好友功能。
可以使用PC端的QQ进行禁止添加好友设置。
设置方法：
1.首先在我们的电脑桌面上找到腾讯QQ并点击它。
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2.然后输入账号密码并点击登录。
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3.接着点击屏幕左下方的三条横杆，然后点击设置，如下图所示。
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4.接着点击权限设置。
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5.然后点击防骚扰。
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6.最后勾选不允许将我推荐给可能认识的人并点击需要回答问题并由我确认。
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