In order to evaluate the jamming efficiency of laser seeker effectively,a jamming model of wave gate decoys in the locking and tracking phase is established.The effects of gate width,interference frequency,coding mode and pulse locking mode on the jamming effect were studied.Firstly,the technologies of seeker′s anti-jamming-time gate technology,pulse locking technology and pulse coding technology are analyzed.Then,the jamming model of high-repetition laser on laser seeker is established.Finally,the influence of different interference factors on the interference process of laser seeker is analyzed based on the time gate number of successful gate decoy.The simulation results show that the gatewidth and interference frequency have great influence on the jamming effect.And the higher the frequency and the wider the wave gate are,the better the jamming effect is.The greater the number of interference pulses in the unit gate,the better the interference efficiency.When the number of interference pulses in the unit gate is greater than 3,the interference time of high frequency repetition is less than 270 ms.The anti-interference performance of the optimal timing pulse is better than that of other pulse locking methods.The research results of this paper have theoretical reference value for the development and use of high frequency interference equipment.