Water storage tank with inner wall convenient to clean

The water storage tank comprises a storage frame with an opening formed in the top end, a purification assembly, a storage assembly and an auxiliary cleaning assembly, the whole storage frame is of a rectangular structure, the purification assembly is correspondingly installed on the side wall of the storage frame, the storage assembly is correspondingly embedded in the storage frame, and the auxiliary cleaning assembly is arranged on the side wall of the storage frame. The auxiliary cleaning assembly is installed in the storage frame in a matched mode. By means of sliding connection between the storage frame and the storage groove, the storage groove can be rapidly drawn out, a user can conveniently clean the interior of the storage groove, water is sprayed out through the first cleaning pipe and the second cleaning pipe under the assistance of the auxiliary cleaning assembly, the side wall and the bottom of the storage groove can be rapidly washed and cleaned synchronously, and the cleaning efficiency is im