The invention provides an equipment control system and method and automatic equipment, and relates to the technical field of automatic control, the equipment control system comprises an upper computerand repeaters, the upper computer is connected with a first module in the controlled equipment through a first-level CAN bus; the upper computer is also connected with at least one repeater through afirst-level CAN bus; the repeater is connected with a second module in the controlled equipment through a secondary CAN bus; through the arrangement of the repeater, the communication data sent by the upper computer can be cached, and the communication data associated with the second module connected with the repeater can be sent to the second module through the second-level CAN bus; and the nodemotion data returned by the second module connected with the repeater can be received through the second-level CAN bus, and the node motion data is sent to the upper computer through the first-levelCAN bus, so that the problem that the CAN bus data is easy to lose is relieved, and meanwhile, the communication real-time performance is improved.