In order to increase the calculating precision of the dynamic scattering density of warhead flinders , this paper analyzes the calculating model of the literature [1] associated with the dynamic scattering density of Warhead flinders ,and locates the errors in the transformation formula hetween the dynamic scattering density of Warhead flinders in relation to the target and the dynamic scattering density of Warhead flinders in relation to the ground (or the air). It rectifies the errors of literature [1]. The simulation examples show that the model is true.