Height-adjustable platform

The utility model discloses a height-adjustable platform which comprises a supporting base, a platform baffle installed on the supporting base and a platform face installed on the platform baffle, a sleeve is arranged below the platform face, a supporting rod is vertically arranged in the sleeve in a sliding mode, and the supporting rod is connected with the platform baffle. The top end of the supporting rod is fixedly installed on the lower surface of the platform face, a rack is arranged on the side wall of the supporting rod, a turbine meshed with the rack is arranged on one side of the rack, and a worm capable of driving the turbine to rotate is rotationally arranged on one side of the turbine. The height of the platform can be adjusted only by rotating the small crank in the middle of the platform; meanwhile, the structure is simple, the height adjusting process can be achieved only through the transmission relation among the turbine, the worm and the rack, assembling is rapid, and later maintenance is c