Did you drag it under the taskbar? If you don’t want to reinstall, try this:

Right-click the taskbar, uncheck the automatic lock option (or click properties to set the taskbar to automatically hide), and then pull the taskbar below the screen Go and you should be able to see the QQ Music interface.

If it still doesn’t work, reinstall it and uninstall it first (Note: Don’t just delete the QQMusic folder. Go to "My Computer → Control Panel → Add and Remove Programs" to find QQMusic. Select Uninstall. Then go Delete the folder), and then change the path. For example, if it was originally installed on the C: drive, change it to the D: drive