Disclosed in the present invention are an impeller washing machine and a control method. The impeller washing machine of the present invention comprises an inner drum, an impeller being provided at a bottom portion of the inner drum, and the inner drum being a water-containing drum during washing/rinsing, a circulation water passage being provided on an outer wall of the inner drum, two ends of the circulation water passage being respectively in communication with the bottom portion and an upper portion of the inner drum, and when an impeller rotates, a water flow in the bottom portion being pushed into the circulation water passage, climbing upward, and being sprayed into the inner drum, so as to form a circulating water flow. By providing the circulation water passage on the outer wall of a non-perforated inner drum, the present invention is able to avoid the provision of a water passage on an inner wall of the inner drum, increases an accommodating volume of the inner drum, maintains cleanliness, increases the amount of laundry that a user can wash at a time, and realizes that the water flow is sprayed into the inner drum from a water nozzle at the upper portion, and the spraying power is large, so as to spray the water flow onto the laundry, such as down jackets, having a large suspension force and floating at a high level, or to enhance the washing effect on various laundry.