Washing machine and control method for washing machine

A washing machine, comprising:

• a water container;
• a filtering device, being configured to communicate with the water container and to receive water from the water container for filtering, and has a sewage outlet for discharging sewage to outside;
• wherein, the washing machine comprises
• a suction device, being configured to perform a suction action to drive the sewage in the filtering device to be discharged through the sewage outlet under an action of pressure difference;
• and
• a recovery device, being configured to collect the sewage discharged from the filtering device;
• the suction device is connected to the sewage outlet of the filtering device and the recovery device through a suction pipeline, and performs the suction action according to an instruction,
• the sewage outlet of the filtering device is connected to a sewage temporary storage device having an internal cavity, the sewage temporary storage device is connected to the recovery device, and the suction pipeline is connected to the internal cavity of the sewage temporary storage device;
• and
• the suction device performs the suction action, and the sewage in the filtering device enters the sewage temporary storage device under the action of the pressure difference;
• the suction device is turned off, and the sewage in the sewage temporary storage device is discharged into the recovery device.