The invention relates to a method for realizing the simple document transmission protocol that TFTP document transmission and relative system. Wherein, it is characterized in that: the service processing plate sends TFTP service request to server; the master control plate transfers said TFTP service request to the server, and according to the information of server, to send relative information to the service processing plate; said service processing plate, according to the information, executes said TFTP service. With said invention, the service processing plate can directly initialize TFTP service request in distributed condition, to obtain load software from the server, to confirm the consistency of version of load documents in server and service processing plate. And the generate log is directly sent to the server, to obtain the operation condition of server.