Washing machine and control method thereof

A washing machine including a door provided to open and close an inlet, a tub having an opening corresponding to the inlet, a drum rotatably provided inside the tub and in which laundry is accommodatable, a door cleaning nozzle provided to spray washing water toward the door, a pump chamber provided at a lower portion of the tub to store the washing water discharged from the tub, a drain pump provided to pump the washing water stored in the pump chamber and discharge the washing water to the outside, and a controller provided to rotate the drum in order to tumble the laundry, spray washing water through the door cleaning nozzle, operate the drain pump to discharge the washing water stored in the pump chamber, and supply the washing water to a water supply pipe connected to a detergent supply device.