According to the particle properties of light,a scattering model of a signal-photon atmospheric transmission was built based on Monte Carlo method.Influences of atmospheric scattering on effects of laser-angle-cheat jam were studied.The results illustrate:①asymmetric factor,atmospheric transmission distance and extinction coefficient weaken the strength of pulse-jamming signal in different degree,circuitous path caused by scattering delays jamming pulse′s arrival in probe of seeker.②Broadening effect of laser-jamming pulse caused by atmospheric scattering is not obvious.