In order to study motion characteristics of a type of rubber bullet kinetic projectile, Matlab was used to simulate projectile motion, according to analysis of simulation results, both law of projectile velocity changing with time and distance and effects on animate target at different distance were obtained, these solve kinetic energy of projectile when flight affected by gravity and air resistance, and different projectile kinetic energy attenuation at different shooting angle, and it is verified the initial velocity 100 m/s of the projectile meets 15 ~ 50 m effective distance indicator, this provides a theoretical basis for further optimization improvement.