The utility model relates to a passive portable non-electric quantity direct trip relay tester, is accessed between additional rated voltage ends of a non-electric quantity protection device, and is used for detecting starting parameters of a direct trip relay. The passive portable non-electric quantity direct trip relay tester is characterized in that the tester includes a slide rheostat and a direct trip relay which are sequentially connected in series between additional rated voltage ends of a non-electric quantity protection device, a voltmeter and a power meter. When the slide rheostat takes a maximum resistance value, the direct trip relay does not work; the voltmeter is connected with two ends of the direct trip relay in parallel and used for measuring the starting voltage of the direct trip relay; and the power meter is connected to two ends of the direct trip relay and used for measuring the initial power of the direct trip relay. Under a circumstance of not accessing an external power supply and using field actual voltage, measurement of correlation parameters of the relay and data reading are realized, equipment investment is reduced, equipment test time is shortened, and equipment test precision is improved.