Railway dispatching order transmission system and transmission method thereof

Aiming at the defects of limitation of radio communication on a communication distance and a channel bandwidth in the prior art and high maintenance cost and long fault treatment cycle of GSM-R (Global System for Mobile Communications for Railway), the invention provides a railway dispatching order transmission system and a transmission method thereof which can overcome the defects. The railway dispatching order transmission system comprises a vehicle-mounted terminal, a communication server and a data processing server, wherein the data processing server is used for setting up a dispatching order and sending the set-up dispatching order to the communication server; the communication server is used for sending the set-up dispatching order to the vehicle-mounted terminal through a GPRS (General Packet Radio Service) or a 3G wireless communication network; the vehicle-mounted terminal is used for sending response to the set-up dispatching order to the communication server through the GPRS or the 3G wireless com