The invention discloses a device and a method used for testing anti-bird pecking capacity of insulating materials. The device comprises an impact head, an impact hammer, an impact hammer height adjusting device, and a sample platform; the sample platform is used for placing of insulating material samples to be tested; the impact head is arranged above the sample platform, and can be moved in a preset range; the impact head is provided with a downward spiculate point; the impact hammer is arranged on the impact hammer height adjusting device, so that the initial height of the impact hammer corresponding to the impact head and the sample platform can be adjusted; the impact hammer falls from the initial height, when the impact hammer falls to contact the impact head, the insulation material sample on the sample platform is impacted by the downward spiculate point, so that stimulation of bird pecking is realized. The device and the method can be used for testing anti-bird pecking capacity of insulating materials conveniently, accurately, and reliably.