A press-washing machine (S1) is provided with: a washing tank (14); a pressing unit (19) that presses to-be-washed-articles (16) in the washing tank (14); a pump (20) for supplying air into the pressing unit (19); and a control unit (50) that controls driving of the pump (20). The control unit (50) is configured to perform control of, for example, blowing air to the pressing unit (19) by driving the pump (20) so that the to-be-washed-articles (16) are press-washed. The press-washing machine (S1) is configured to be attachable to a washing machine (W1).