A washing machine has a drum (1) rotating with laundry (10) received in the drum, a receiving tube (3) for receiving the drum (1) and supported on a housing (5) by an elastic support mechanism (4), a motor (2) for rotating the drum (1), a vibration detection section (6) for detecting vibration of the receiving tube (3), a frequency component calculation section (7) for calculating a frequency component value of the vibration detected by the vibration detection section (6), and a rotation speed control section (8) for varying the speed of the motor (2) according to the magnitude of the frequency component value. Adhesion of the laundry to the inside of the drum is suppressed, and this enhances cleaning ability of the washing machine.