The invention discloses a leather liming device. The device is characterized in that supporting frames are arranged at the two ends of a base, shaft holes are formed in the supporting frames, a limingbarrel is a cylindrical barrel, a rotating shaft is arranged at the two end faces of the liming barrel, the axis of the rotating shaft coincides with the axis of the liming barrel, the liming barrelis arranged on the supporting frames through cooperation of the rotating shaft and a shaft hole, the axis of the liming barrel is parallel to the base, a feeding gate, a liming barrel and a drug inletare formed in the side face of the liming barrel, a drive motor is connected to the rotating shaft, a water removal clamp is arranged on the feeding gate of the liming barrel, and comprises a lower supporting plate and an upper clamping plate, one side of the lower supporting plate is connected with the edge of a feeding opening, baffles are arranged on the other sides of the lower supporting plate, and the upper clamping plate can be arranged on the lower supporting plate in a lifting manner. The leather liming device can automatically rotate and stir, putting in and taking out of raw material leather can be facilitated, drug can be conveniently added, sewage can be conveniently drained, the consumed time of the liming procedure can be shortened, manpower is saved, and environment sanitation is ensured.