A double-drum washing machine has a first washing drum and a second washing drum. A control method comprises water intake and drainage control and high-power process control, wherein the water intake and drainage control comprises water intake control and water drainage control; the first washing drum judges whether to reuse drained water of the second washing drum before executing a water intake process and judges whether to enable the drained water to be drained into the second washing drum and reuse the water or not before executing a water drainage process; and the high-power process control is used for controlling any one of a heating process, a dewatering process and a drying process of the first washing drum and any one of a heating process, a dewatering process and a drying process of the second washing drum not to be executed at the same time.