The invention provides an electrical comprehensive control system for a three-dimensional garage of a bus, and belongs to the technical field of three-dimensional garages. The system is characterizedin that a bus three-dimensional garage adopting full-ratio hydraulic synchronous control scheme is provided; four hydraulic cylinders are synchronously operated through full-closed-loop control of a proportional velocity regulating valve; a bus is kept stable when being stored and picked; a safety positioning assembly and a remote control module are arranged. The system has the advantages that 1,the problems of heavy load, non-uniform distribution of load, unstable lifting in lifting up and down, and high synchronous error can be solved; 2, the problem of accurate positioning of high-inertiaload in moving can be solved; 3, the problem of remote automatic control and on-site manual control can be solved; the problems of heavy load, non-balanced load and low synchronous accuracy in liftingup and down of a big bus three-dimensional garage can be mainly solved.