WeChat's heavy memory use has sparked discussion on how to manage storage more effectively.
存储激增的核心原因
因为微信的聊天记录仅存储在用户本地的设备上，很多朋友常年不清理聊天记录，逐步累积，就会占用越来越多的空间。
默认开启的“自动下载”功能会将群聊/频道的所有媒体文件保存到本地，长期积累导致空间被无效占用。
3. 缓存数据滚雪球效应
朋友圈浏览、小程序运行等产生的临时缓存未被定期清理，尤其视频号、网页插件等模块的缓存可达数GB。
The main culprit is years of chat records stored locally on devices, since WeChat does not rely on cloud storage. Default auto-download settings also save media from group chats, while everyday use of Moments, short videos, and mini programs generates cache files that can quickly add up to several gigabytes.
这样操作，立即释放存储空间
第一步：清理缓存与原文件（安全高效）
To free up space, users can clear cache files in Settings, which removes temporary data without affecting chat history.
A new feature also allows users to bulk-delete large original photos and videos while keeping lighter thumbnails.
第二步：精准管理聊天记录
For more thorough cleanups, chat histories can be sorted by size or date to remove outdated group files and oversized videos while preserving text messages.
第三步：关闭自动下载（从源头减负）
路径：设置 → 通用 → 照片、视频、文件和通话→ 关闭 “自动下载”→ 同步关闭 “照片”和“视频”保存到相册的开关。
Turning off auto-downloads and disabling automatic saving to the phone's gallery can further prevent storage overload.
第四步：处理特殊异常情况
If the "Other Data" category grows abnormally, switching accounts or restarting the device usually resolves the issue.
长期维护策略
| 频率 | 操作 | 预估释放空间 |
|---|---|---|
| 每周 |
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| 每月 |
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| 每季度 |
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| 换机前 |
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A long-term maintenance strategy is recommended: weekly cache clearing can free 1–5 GB, monthly checks of large files up to 10 GB, and quarterly deletion of year-old chats as much as 15 GB. Before changing devices, backing up and reinstalling WeChat remains the most effective way to reset storage use entirely.
关键注意事项
A long-term maintenance strategy is recommended: weekly cache clearing can free 1–5 GB, monthly checks of large files up to 10 GB, and quarterly deletion of year-old chats as much as 15 GB. Before changing devices, backing up and reinstalling WeChat remains the most effective way to reset storage use entirely.
关键注意事项
Users are also reminded to back up key chats through the desktop app and save important files to their devices or cloud services before cleaning. For those with 128 GB phones where WeChat alone exceeds 50 GB, upgrading storage may be the most practical option. Common misconceptions have also been clarified: deleting friends does not reduce storage use and duplicate files are not merged automatically, instead requiring manual cleanup.
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