A liquid electromagnetic valve includes an inlet connected to an external liquid source; an outlet discharging liquid entering from the inlet; a flow path forming member having a flow path connecting the inlet and the outlet formed thereto; an opening-closing member capable of opening and closing the flow path; a drive portion opening and closing the opening-closing member based on a control performed by an external element; and a minute bubble generator provided in the flow path and having plural narrowing portions for adding minute bubbles to a liquid passing through the flow path by narrowing the flow path in plural stages.