Method of processing application program upgrade, and terminal device

Disclosed are a method of processing an application program upgrade, and a terminal device. The method comprises: obtaining the distance between a terminal and another terminal having short-range wireless communication capabilities; when said distance is less than or equal to a predetermined data transmission distance, obtaining first version information of said terminal and second version information of said other terminal; when the version number in said first version information of said terminal is the same as the version number in said second version information of said other terminal, comparing the version levels in said first version information and in said second version information; and, when said version levels are different, performing upgrade on the basis of the higher-level version file.