The invention provides a cleaning tank for a kitchen and belongs to the technical field of kitchen equipment. The problem that solid-liquid separation by using the conventional cleaning tank is troublesome is solved. The cleaning tank for the kitchen disclosed by the invention comprises a tank body, wherein a drain hole is formed in the bottom surface of the tank body; a dross hole is formed in the side wall of the tank body; a dross discharge channel is formed in the tank body; a plurality of reflux holes are formed in the dross discharge channel; the tank body is further provided with a reflux channel; one end of the reflux channel is communicated with the reflux holes, and the other end of the reflux channel is communicated with the drain hole. The cleaning tank for the kitchen further comprises a fixed clamping rod and a movable clamping rod, wherein a sealing cover is hinged at the dross hole of the tank body; a transmission part is arranged between the sealing cover and the movable clamping rod; a hairbrush head is connected onto the tank body in a sliding manner. The cleaning tank for the kitchen can be used to collect solid residues into a garbage bag and is convenient to use.