Terrazzo polishing device

The utility model relates to a terrazzo polishing device which comprises a vehicle body, the vehicle body comprises a moving seat and a rotating seat, the moving seat and the rotating seat are rotatably installed, a handle is installed on the top side of the moving seat, idler wheels are installed on the two opposite sides of the moving seat, and a splash guard is arranged on the outer side of the bottom of the rotating seat. A main grinding disc and two auxiliary grinding discs are rotationally mounted at the bottom of the rotating seat; a second motor works and a speed reducer regulates the speed to drive a main grinding disc and driving teeth to rotate, at the moment, transmission teeth are in meshing transmission to drive driven teeth to rotate, then a second transmission shaft and an auxiliary grinding disc rotate, at the moment, grinding is conducted through rotation of the main grinding disc and the auxiliary grinding disc, and grinding of corners is achieved through the auxiliary grinding disc; and th