The invention discloses hydraulic automatic water-saving vehicle cleaning equipment, which relates to vehicle cleaning equipment and comprises a water saving device, a hydraulic device and an inductive control device. The water saving device consists of a middle water tank, a clean water tank, an accumulated water tank, a self-priming pump, a hydraulic tank, a nanometer filter screen, a hydraulicvalve, an automatic interchange valve, an automatic water pumping valve and an internal automatic blow-off valve. The hydraulic device consists of a rough cleaning workshop, an agent spraying workshop, a spray-washing workshop, a throw-drying workshop, a wax spraying workshop, a polishing workshop, a hydraulic nozzle, a self-inductive nozzle, throw-drying equipment and polishing equipment, and the inductive control device comprises an automatic control device and a remote control device. A vehicle is firstly roughly cleaned in the rough cleaning workshop, cleaning agent is sprayed on the vehicle entering the agent spraying workshop, then the vehicle enters the spray-cleaning workshop to be thoroughly cleaned in a spraying manner, is in a throw-drying process in the throw-drying workshop and enters the wax spraying workshop, wax agent is sprayed on the vehicle, then the vehicle is polished in the polishing workshop, accordingly, cleaning and maintenance of the vehicle are completed, and comprehensive water conservation and efficacy enhancement are synchronously realized. The hydraulic automatic water-saving vehicle cleaning equipment has the advantages of exquisite structure, multiple functions, wide applicability, high grade and efficiency, energy conservation, environmental protection, convenience in carrying and utilization, small occupied area, low manufacturing cost, high comprehensive cost performance and the like.