Anti-falling safety device of hydraulic jack

The anti-falling safety device of the hydraulic jack comprises a rod body, a pressure relief valve is arranged on the wall body of the top of the rod body, an oil pumping handle is arranged in the wall body of one side of the pressure relief valve, a telescopic oil cylinder is further arranged in the inner wall body of the rod body, a plurality of adjusting clamping grooves are further formed in the wall body of one side of the rod body, and the adjusting clamping grooves are connected with the telescopic oil cylinder. An adjustable lifting hook is further arranged on the outer side wall body of the rod body, a fixed lifting hook is further arranged on the lower wall body of the telescopic oil cylinder, a base is further arranged on the bottom wall body of the telescopic oil cylinder, an anti-falling mechanism is further arranged on the bottom wall body of the rod body, and the anti-falling mechanism comprises a mounting pipe, an adjusting nut and a buckle. The utility model relates to the technical field of