The utility model relates to a relay testing tool. The device comprises a toggle switch and a power switch which are connected with a relay, wherein the power supply terminal is connected with the power supply switch and the relay and used for being connected with an external power supply, the first measuring terminal is connected with a common pin of the toggle switch, the second measuring terminal is connected with the relay, and the relay is connected with a first position pin and a second position pin of the toggle switch respectively; and the toggle switch is used for switching the firstmeasuring terminal and the second measuring terminal to be conducted when the relay is powered on or powered off. The device is flexible and convenient, is high in testing efficiency, and saves time and manpower resources.