The invention discloses a
water storage device of a washing
machine, the washing
machine and a control method of the washing
machine, the
water storage device of the washing machine comprises a box body configured on the side face of a first
barrel, the box body is provided with a water inlet and a water outlet, the water inlet is communicated with a water inlet mechanism, the water inlet mechanism is communicated with a liquid box, the liquid box is communicated with barrels, and the barrels comprise the first
barrel; the water conveying mechanism is respectively communicated with the water outlet and the liquid box; the water conveying mechanism is configured to convey water in the box body to the liquid box so as to enter the
barrel body; the water inlet mechanism is electrically connected with the water conveying mechanism. When the
outdoor temperature is lower than the indoor temperature, the
water storage device can store low-temperature water conveyed outdoors in the box body in advance through the water inlet mechanism, so that the low-temperature water absorbs heat of
indoor air, heat generated in the using process of the washing machine or residual heat generated after the washing machine is used up, and the temperature is increased to obtain preheated water. When the washing machine is used, the preheated water in the box body is conveyed into the barrel body through the water conveying mechanism, the cleaning effect is improved, and
energy consumption is reduced.