When you delete folders Sharepoint site, they aren't immediately removed. Deleted items go into the SharePoint site recycle bin for a period of time or until the Recycle Bin is emptied. If you've accidentally deleted a folder and need to recover it, there's a good chance it can be recovered.
This article describes how to recover a folder in a Sharepoint site. To learn how to delete a folder in a Sharepoint site, click here.
1. Click on the Recycle Bin in your Sharepoint Site.
2. Select the Folder you'd like to restore.
3. Click Restore.
Your folder has been restored!