In order to investigate the influence of the pitch angular velocity on the penetration trajectory of projectile penetrating into multi-layered target， a large amount of experimental and simulation from literature was analyzed. In the paper， LS-DYNA finite element software was used to simulate the projectile penetrating into multi-layered slabs with or without considering the pith angle velocity. Data obtained in the simulations， like the paper studied the pith angle， landing time， landing speed， landing offset， angle of attack，landing angle， fuse overloading and etc.， were compared with the experimental results. The results show that the numerical simulation was agreed well with the corresponding experimental data， when the pitch was taken into consideration. The influences of pitch with different values and directions on the trajectory of projectile penetration into multi-layered reinforced concrete slabs were analyzed. It shows that， under the same value， the positive pith angular velocity had a greater influence than the negative one. Secondly， in order to ensure that the projectile explode in the target building， the value and direction of the pith angular velocity of the projectile must be controlled between -627°·s^-1 and 427°·s^-1.