The ground dispersion of aerial terminal sensitive submunition was studied.The characteristics of terminal sensitive submunition were analyzed based on the comparison with the gun shot terminal sensitive submunition.Then,a method was proposed for quick estimation of the bullet dispersion based on the upper and lower bounds of bullet drop-points.How the different scattering conditions influence the bullet dispersion was also studied,and data was collected for simulation.The result shows that,the limiting error of the estimation method is within the allowable combat range,and the scattering velocity and trajectory angle have an important influence on the bullet dispersion′s radius.