The utility model discloses an acidification machine with pressure detection function, including acidification machine body, be equipped with evacuating device on the acidification machine body, evacuating device is connected with an acidification kettle through an exhaust tube, be equipped with at least a set of evacuation connector on the acidification kettle, the pressure sensor of the pressure in being arranged in detecting exhaust tube or acidification kettle still, pressure sensor with evacuating device all is connected with a controlling means. The utility model discloses a battery internal pressure is confirmed in real time to increased pressure sensor in the exhaust tube or in the acidification kettle, and pressure sensor gives controlling means with pressure information transfer, and evacuating device starts or the battery pressurize by controlling means control.