So far, The upgrade plan of acquisition terminal software is mainly using TCP/IP protocol in electricity information collection system. This paper provides a remote upgrade plan of electricity acquisition terminal based on FTP protocol, introduces system composition and implement method of remote update by FTP. This paper detailed design a software update process of acquisition terminal. The method of remote upgrade by FTP protocol is faster in transferring data. The stability is highly. It proves that the method of remote upgrade by FTP can be used in electricity information collection after lots of tests.