The invention discloses a cleaning device for a casserole. The cleaning device comprises a base, wherein a first chute is arranged on the upper surface of the base, a first sliding block is arranged in the first chute, the upper surface of the first sliding block is fixedly connected with the lower surface of a first fixed block, a threaded cylinder is clamped on the right side surface of the first sliding block and in internal threaded connection with a threaded column, and the left end of the threaded column is fixedly connected with the right end of a first rotating shaft. According to thecleaning device for the casserole, a motor, a first bevel gear, a second bevel gear, a third bearing, a third rotating shaft, a nozzle, a water pipe, the first fixed block, a second fixed block, an electric push rod and a casserole brush are cooperative, a second sliding block is driven to descend by shortening of the electric push rod, the casserole brush is fully contacted with the inner wall ofthe casserole, the motor drives the casserole brush to rotate at a high speed, cleaning of residues on the inner wall of the casserole is accelerated, cleaning efficiency of the casserole is improved, and high-temperature scalding of the skin during manual cleaning is avoided.