In order to improve the damage effect of the explosively formed projectile (EFP) on the target, a numerical simulation and theoretical analysis method is applied to the typical double-layer hemispherical EFP liner, and the effect of the copper-iron composite double-layer EFP molding process and the cladding effect are investigated. The factors are analyzed. The results show that the inner liner of the hemispherical liner adopts the structure with thick top and thin edge, and the outer liner adopts the structure with thin top and thick edge, achieving a better coating effect on the inner liner. The conclusion can be drawn that the double-layer EFP has the smallest velocity gradient and better coating effect under the conditions that the shell thickness is between D (0.04~0.07)), the bending diameter ratio of the inner and outer liners is between D (1.75~2.75) and the loading height is more than 1.6D.