The disturbance performance of smoke against infrared imaging and tracking needs to be verified through field test. The field test includes the use of a given smoke and a moving target, the reasonable planning of the relative positions of the smoke, target and imaging sensor, the changing of the releasing time and condition of the smoke and the test of the extinction and disturbance effectiveness of the smoke. According to the data obtained by the infrared imaging sensor, the extinction and disturbance model of the given smoke is verified and revised. Its infrared disturbance rule is derived. This work provides reliable basis for the correct use of the given smoke and the study of its effectiveness in disturbing infrared imaging and tracking.