This should be a temporary file generated when you open some software, the most common ones are word and excel in Microsoft office. For example, if you have a "resume". Doc" word document, when you open it, a temporary file will be generated on the desktop at the same time. If it is closed normally, it will also be closed at the same time. Of course, sometimes the system can't be shut down because of the card machine, virus and other reasons, or your software doesn't quit normally, and the temporary files won't be cleared. It can be deleted manually. It is recommended to download a 360 security guard to carry out some comprehensive diagnosis and repair operations on the system!