The invention relates to a portable calibration device for a parking braking performance tester. The portable calibration device for the parking braking performance tester comprises a force application system, a stress system and an auxiliary structure, wherein the force application system comprises a force application end, a worm and gear boost device, a force application lead screw and a force application link joint, the stress system comprises a stress link joint, a movable stress-end joint, a standard sensor, a sensor double-thread connection piece and a movable fixed-end joint, the auxiliary structure comprises a separating plate, an outer shell and a lever, the worm and gear boost device is installed at the force application end, a worm gear of the worm and gear boost device is connected with the force application lead screw in a meshing mode, the rear end of the force application lead screw is connected with the lever through the force application link joint, the lever is connected with the movable stress-end joint through the stress link joint, the movable stress-end joint is connected with the standard sensor through the sensor double-thread connecting piece, the movable fixed-end joint which corresponds to the movable stress-end joint is installed at the force application end, and a tested sensor is connected between the sensor double-thread connecting piece and the movable fixed-end joint.