The invention provides a ground equipment system based on Beidou satellite time service signals. The system comprises a dispatching center equipment subsystem and a plurality of station equipment subsystems. The dispatching center equipment subsystem comprises a dispatching center Beidou Satellite time service instrument, a center clock server and circuit communication prepositive servers of a plurality of circuits. The dispatching center Beidou satellite time service instrument carries out correcting according to time service signals of a Beidou satellite, and clock signals are obtained and output. The center clock server receives clock signals output by the dispatching center Beidou Satellite time service instrument through an NTP center local area network, center clock signals are generated and output. The circuit communication prepositive servers receive the center clock signals through the NTP center local area network and output the center clock signals. The station equipment subsystems comprise self-regulated machines and CBIs. The self-regulated machines receive the center clock signals output by the circuit communication prepositive servers of the circuits belonging to a station through an NTP wide area network. The CBIs obtain the center clock signals through serial buses from the self-regulated machines. According to the ground equipment system, ground equipment can operate according to safe and reliable clock signals, and train running safety can be well guaranteed.