Sealing performance testing device and sealing performance testing method

The invention discloses a sealing performance testing device and a sealing performance testing method. The sealing performance testing device comprises a jacking device, a fixing frame, a workpiece sealing mold and a workpiece conveying mechanism; the jacking device is provided with a liftable bracket and a driving device for driving the liftable bracket to lift; the fixing frame is arranged abovethe jacking device in a spaced mode; the workpiece sealing mold is adjustably arranged on the fixing frame and can rotate towards the jacking device; the workpiece conveying mechanism can move the workpiece located on the workpiece conveying mechanism to the position between the jacking device and the workpiece sealing mold from the outer side of the jacking device. According to the scheme, the workpiece conveying mechanism is used for positioning and conveying the workpiece, the workpiece and the mold are combined into the cavity in combination with the jacking device, so that an effective implementation device is p