The invention discloses a lightning arrester detection device and a use method thereof. The lightning arrester detection device comprises a support device, a detection device, a moving device, a controller and two fixing clamps, wherein the support device comprises a plurality of fixing platforms for fixing a lightning arrester; the plurality of fixing platforms are horizontally fixed on a support base; the moving device is used for driving the detection device to move; the moving device is arranged above the support device or on one side of the support device; the detection device and the moving device are respectively independently connected with the controller. The lightning arrester detection device has the beneficial effects that as a plurality of lightning arresters are arranged on one support base, the detection device is driven by the moving device to achieve electricity leakage detection on the lightning arresters; the whole device is simple in structure, sequential measurement on the plurality of lightning arresters can be achieved on one line, automatic measurement is achieved, and the labor is saved; on one line, when the detection device is used for measuring a second or a third lightning arrester, the lead of a first lightning arrester can be recovered and disassembled, and at the same time the lightning arrester to be detected can be mounted.