Abstract: The liner is an important element affecting the formation of damage element of shaped charge. The improvement of its structure is an effective way to enhance the power of warhead, and it is also a research hotspot in the field of efficient damage. In this paper, on the basis of the type of spherical lacking linear, a kind of cylindrical-spherical lacking combination liner was designed, by using the method of numerical simulation comparison of cylindrical-spherical lacking combination liner and with jet sunder armor performance which is formed by the lack of liner, and take the central Angle delta theta θ, wall thickness δ, cylindrical shell cylindrical shells outer diameter D and height H as a variable, penetration depth and broken hole size as evaluation standard, According to the principle of orthogonal experiment, the finite element model of cylindrical and spherical deficiency composite liner shaped charge penetrating 45# steel target was established and simulated by LS-Dyna software. The results show that the penetration depth is significantly increased when the cylindrical shell structure is added to the top center of the spherical dome, and the height H and outer diameter D of the cylindrical shell are the main factors affecting the penetration depth. For the 60 mm shaped charge, “θ=130°, δ=1.6 mm, D=12 mm, H=8 mm” are the best structural parameters of the composite shield. The penetration depth of 45# steel target is 179 mm at 150 μs, which is 34% higher than that of the same type spherical lacking liner.