In order to improve the single damage mode of armor piercing fin stabilized discarding sabot(APFSDS), a composite structure combining ordinary tungsten core, fragile tungsten core and energetic fragments was proposed. The front segment of tungsten core is brittle and the middle and back segments retain the strength and toughness of ordinary tungsten core through component mixing and process control, and the energetic fragments were loaded in the fragile tungsten core section. Under the combined action of energy releasing reaction energy of energetic fragments and stress wave of tungsten core impact, the stress threshold value of brittle tungsten core is reduced to make it fully broken when penetrating thin target. The impact effect of energy release reaction of energetic fragments is used to replace the centrifugal force effect of APDS tungsten core breaking, and the dispersion Angle of fragile tungsten core fragments is increased, so as to expand the damage range. The chemical reaction product of energetic fragmentsare used to release energy reaction products to make the pressure and temperature in the confined space increase sharply, and strengthen the damage effect on the equipment and personnel inside the target. The damage effects of common tungsten core, fragile tungsten core and composite tungsten core on multilayer aluminum plate were compared by experiments. The test results show that the composite tungsten core not only retains the penetration ability to the thick target, but also the damage range of the fragments generated by the composite tungsten core when it impacts the thin target is obviously larger than that of the fragile tungsten core, and at the same time, it increases the function of deflagation damage. The test results are in accordance with the design purpose.