The invention relates to a system for loading wireless device files, which comprises an application server, a data base connected with the application server and a wireless device connected with the application server through a communication network, wherein the application server comprises a receiving module for receiving the loading orders transmitted by the wireless device, an obtaining modulefor obtaining the files which need to be loaded from the database according to the loading orders, a transforming module for transforming the file into the file whose suffix name is PS when the suffix name of the required loaded file is not DOC, which is used for transforming the file whose suffix name is PS into the file whose suffix name is PDF, finally, transforming the file whose suffix name is PDF into the file whose suffix name is JPG, and a transmitting module for transmitting the file whose suffix name is JPG to the wireless device. Furthermore, the invention further provides a methodfor loading the wireless device.