The invention discloses a method for improving cleaning rate and a washing equipment, which relates to the technical field of the washing equipment. The method for improving cleaning rate is that in the washing process the washing equipment, according to a washing stage and a turbidity of washing water, carries out several times the operation of draining into water and pouring into dirty water. At the same time, the invention also provides the washing device applying the method for improving the cleaning rate. The method not only reduces water consumption, and improves the cleaning rate, but also increases the washing efficiency, and lowers the washing cost.