The invention discloses an intelligent three-dimensional garage control system based on CAN bus, which includes a main control cabinet, an intermediate control box, a man-machine interface and an expansion module. Data processing capability; the expansion module, man-machine interface and several intermediate control boxes are respectively connected to the CAN bus as nodes of the CAN bus; the intermediate control box sends monitoring data to the CAN bus, and after being received and processed by the main control module, not only the The interface can also send control commands such as parking, picking up, and parking number input to the main control module on the bus through the man-machine interface. The invention adopts the CAN bus serial communication technology, the data transmission is high-speed and reliable, and the unified management of the system can be realized. By simplifying the system wiring, the amount of electrical construction is greatly reduced, and at the same time, it is convenient for system expansion, effectively ensuring the safety of parking in the garage, and convenient for garage management. .