In order to study the effect of angle of attack on resistance characteristics of hollow projectiles, three kinds of hollow projectiles with typical structure was simulated by Fluent software. The effect of angle of attack on flow field configuration of hollow projectiles was analyzed, as well as the drag coefficient under different angle of attack and different Mach number was got. The result showed that the external conical hollow projectile within the 16°angle of attack were not blocked. With the increase of angle of attack, the critical blocking velocity of mixed tapered and inner conical hollow projectile increased, and the critical blocking velocity had a sharp increase when the angle of attack was greater than 8°. The angle of attack had a lager effect on drag coefficient of inner conical hollow projectile and had a smaller effect on exteral conical hollow projectile. Recommended to choose external conical hollow projectile rather than inner conical hollow projectile. With the increase of angle of attack, the drag coefficient of hollow projectiles increased, and the drag coefficient had a sharp increase when the attack angle was greater than 4°. Quadratic formula without a term could be uesd to describe the relationship between attack angle and drag coefficient of mixed tapered and inner conical hollow projectiles.