The invention relates to a mahjong tile cleaning drum which comprises a frame, a casing, a rotary drum, a drum door, a water spraying pipe, a brush, a gear driving mechanism and a drum door driving mechanism. The rotary drum is supported on the frame rotatably and driven by the gear driving mechanism, a tile feeding and discharging port is formed in the circumference of the rotary drum, the drum door is arranged on the rotary drum rotatably and driven by the drum door driving mechanism, and the tile feeding and discharging port in the rotary drum is opened or closed by means of the rotation of the drum door relative to the rotary drum. The brush is arranged in the center of the rotary drum, the water spraying pipe is arranged on one side outside the rotary drum, the casing is arranged on the frame, and the rotary drum is covered with the casing. The mahjong tile cleaning drum has the advantages that tiles can go in and out of the rotary drum easily, the tile feeding and discharging port can be opened and closed automatically, dirt on the tiles can be cleaned away completely due to double action of friction of the brush and jet of the water spraying pipe, and the mahjong tile cleaning drum has an automatic drying function and is high in automation degree and efficiency and capable of saving time and labor.