The invention belongs to the technical field of upholstery floor hammers, in particular to an upholstery floor hammer. The upholstery floor hammer comprises a handle and a hammer body, wherein one endof the handle is mounted on the outer circumference surface of the hammer body. The designed upholstery floor hammer has the function to perform correction processing on floors when the floors are installed in the upholstery process. The function of a speed change mechanism is to adjust the torque of a driven shaft, meanwhile, a flywheel can be driven to work by a motor with lower power, and theoverall weight of the floor hammer is reduced. When a second gear meshes with a second bevel gear, the movement of a drive ring is synthesized by the movement of three fifth gears rotating about selfaxes and the movement of the three fifth gears rotating about a first rotating shaft; and one of the movement is adjusted to adjust the rotating speed and the torque of the drive ring to achieve a function of speed change, and a small motor is enabled to drive the flywheel to operate.