打开微信—我—账号与安全—绑定QQ号即可，或者下载更新QQ至QQ2011beta4及以上版本即可。
具体如下：
1、微信图标消失不见了，可能的一个原因是，您的微信没有绑定您当前的QQ号码。可能您使用其他QQ登录了微信，或您没有使用当前QQ号注册微信，还有可能您解绑了QQ号。
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2、若您没有使用当前QQ号注册微信，则您直接用当前QQ号登录微信即可绑定该QQ号码。若您解绑了QQ号，您需要将QQ与微信进行绑定关联。
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3、要实现微信与QQ号的绑定，请执行以下操作：打开微信，将界面定位到“我”选项卡界面。
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4、选择账号与安全，点击进入。
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https://iknow-pic.cdn.bcebos.com/622762d0f703918f7ba44f875d3d269759eec402"/>
5、您可以在此界面看看您的QQ号是否为绑定状态，绑定即可。
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6、微信图标不显示与QQ客户端版本也有关系，若您的QQ是旧版本，可能就不会显示微信图标。对于这个原因，您可以下载更新QQ至QQ2011beta4及以上版本即可。
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