首先，来到QQ安全中心的网站。输入要修改密保的账户的账号密码即可。
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第二步，登录进入个人安全界面，在右边找到密保问题隔壁的“修改”按键。
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第三步，输入往时设置的密保问题，并点击验证。
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第四步，如果密保问题不幸丢失，也可以尝试其它办法。如下图中的手机短信验证。
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第五步，进入到修改密保问题的界面，按规定输入一些相关的密保信息即可。
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第六步，再次验证刚刚输入的密保信息，以免输入错误。
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最后，就成功的改好QQ的密保问题啦。
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扩展资料：
QQ是腾讯公司推出的一款横跨PC和移动互联网时代的即时通信平台。丰富的功能和趣味的玩法，让QQ成为中国年轻用户最喜爱的社交平台之一。
用户可以随时随地与好友聊天、视频、斗图，用主题、气泡、挂件等个性装扮让自己与众不同，在这里结交趣味相投的新朋友；用厘米秀开启年轻人专属的个性化聊天模式；畅游在动漫、文学、手游的娱乐海洋里；体验QQ钱包带来话费充值、网购、转账收款的全新移动支付。
截至2017年第一季度，月活跃账户数达8.61亿，最高同时在线账户达到2.66亿。