In order to verify the anti-jamming capability of laser terminal guidance seeker during flight,the technologies of laser seeker interference and anti-jamming were analyzed.Firstly,the seeker was mounted on a rocket sled,and then high speed motion of the missile close to the target was simulated.The range test system of laser interference was constructed.Test data of every test device were obtained,and test data were analyzed.The test results show that the test system is safe and reliable,and can be able to assess anti-jamming capability of the seeker in high-speed motion close to the target.