In order to study the ballistic performance of electromagnetic launching depth charge,this paper studies the firing-range of the electromagnetic launching depth charge under the maximum kinetic energy using the 6-DOF rigid body trajectory model and ground-dispersion simulation prediction model. The errors of impact point of the electromagnetic launching depth charge under maximum firing-range and minimum firing-range are calculated. In addition , the influence of various error factors on firing-range and directional intermediate error of electromagnetic launching depth charge is studied. The result shows that:1)the firing-range of electromagnetic launching depth charge is determined by the maximum kinetic energy of launcher and performance index of electromagnetic launching depth charge;2)the impact point error of electromagnetic launching depth charge is mainly caused by initial velocity error,lateral initial deflection error and wind speed error.