The invention provides a bearing washing device which comprises a bearing support part, a transmission part, a washing part, an air drying part and a bracket, wherein the bearing support part comprises a support rod, a guide track mounted on the support rod, a support shaft mounted on the guide track and a nylon partitioning sleeve mounted on the support shaft; the axial direction of the support shaft is perpendicular to the extending direction of the guide track, and at least one end of the support shaft extends out of the guide track; the nylon partitioning sleeve is wound at one end, stretching outside the guide track, of the support shaft; the support shaft is connected with the transmission part and is suitable for rolling along the guide track under the traction of the transmission part; the washing part comprises a water tube and a washing nozzle; the air drying part comprises an air tube and air drying nozzles; the air drying nozzles are arranged on the bracket and face the bearing when the bearing is mounted on the nylon partitioning sleeve. By adopting the bearing washing device provided by the invention, the bearing washing efficiency and the security are improved.