If the file has been permanently deleted in Baidu's network disk, it is generally impossible to retrieve it. Because the permanent deletion operation of Baidu's network disk is to completely delete files from the server, rather than just moving them to the recycling bin or garbage bin. However, if you have set the Version History of the file, you may be able to retrieve previous versions, as shown below:

1. Find the deleted file in "My Resources" of Baidu's network disk, and right-click and select "Version History";

2. Check whether the previous version exists and restore it.

It should be noted that only when the version history function is set and the previous version has not been deleted, it is possible to retrieve the permanently deleted file.