The invention relates to an efficient water washing tank. The tank includes a tank body, a vertical separating plate is connected with an inner chamber of the tank body, a pre-washing tank and a rinsing tank are formed on the left and right sides of the vertical separating plate respectively, a feeding guide roll is connected with the left side of the top of the pre-washing tank in a rotating mode, two dust removal rolls are arranged on the left side of the feeding guide roll, the dust removal rolls are connected in an attaching mode, an upper cloth guide roll and two lower cloth guide rolls are connected with the top and the bottom of an inner chamber of the pre-washing tank respectively in a rotating mode, the two lower cloth guide rolls are arranged in parallel, and an upper scrubbing roll is connected with the top of the upper cloth guide roll in an attaching mode. According to the efficient water washing tank, the structure is simple, the stability and reliability can be achieved,the cleaning capacity is strong, the cleaning efficiency is high, fabric can be pre-washed, washed, and rinsed fully, the effect of washing can be improved, through the arrangement of the pre-washingtank and the rinsing tank, the fabric can be pre-washed, dirt on the surface of the fabric can be removed, then washing can be carried out fully, so that the cleaning is cleaner, the utilization of water resources can be improved, and a wide application prospect can be achieved.