方法1：
取消手机QQ消息同步至电脑端。
1、打开电脑QQ主面板，点击主界面中的“设置”按钮。
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2、在打开的“系统设置”窗口中，切换至“安全设置”选项卡，点击“消息记录”项，取消勾选“登陆QQ时自动同步最新聊天记录”项。设置之后，之前通过手机QQ所接收的聊天记录，待登陆电脑QQ后，消息会自动实现同步。
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方法2：
取消同步电脑端QQ消息至手机端。
1、打开手机QQ，切换至“我”选项卡，点击“设置”项进入。
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2、在打开的“设置”界面中，点击“聊天记录”项。
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3、并在打开的“聊天记录”界面中，关闭“同步最近聊天记录至本机”。设置之后，最近一段时间在电脑端QQ上的聊天记录就不会自动同步至手机端。
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拓展资料：
查找QQ聊天记录的方法：
1、打开qq。
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2、打开想要查找的好友对话框。
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3、选择右下方”消息记录“。
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4、右方出弹出最近的消息记录了。
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5、点开放大镜图标。
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6、就可以搜索相应聊天记录的关键词查找或者某一段时间的聊天记录了。
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QQ是腾讯QQ的简称，是腾讯公司开发的一款基于Internet的即时通信(IM)软件。目前QQ已经覆盖MicrosoftWindows、OSX、Android、iOS、WindowsPhone等多种主流平台。其标志是一只戴着红色围巾的小企鹅。
腾讯QQ支持在线聊天、视频通话、点对点断点续传文件、共享文件、网络硬盘、自定义面板、QQ邮箱等多种功能，并可与多种通讯终端相连。
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