The invention relates to the field of furniture and discloses a sink cabinet. The sink cabinet comprises a base plate, wherein the base plate is provided with a sewer pipe reserving hole and is fixedly connected with a rear cover plate, two sides of the rear cover plate are fixedly connected with side plates, the side plates are fixedly connected with the base plate, a front cover plate is fixedlyconnected between the side plates, a water absorption cushion expanding after water absorption is laid on the base plate, a door pushing assembly is arranged between the base plate and the side plates and comprises a push rod and a driving part, and a gap is reserved between the push rod and the water absorption cushion. The sink cabinet has the following advantages that a new mechanical structure is utilized in the scheme, the door pushing assembly pushes a cabinet door by arranging the water absorption cushion, a user does not need to open the cabinet door manually, and convenience is brought to the user in operation. In addition, water is absorbed through the water absorption cushion, so that the user does not need frequent cleaning; after the water absorption cushion expands by absorbing water, the door pushing assembly can push out the water absorption cushion while the cabinet door is opened, the user can more conveniently take the water absorption cushion, and cleaning is moreconvenient.