Abstract: According to the structure of aircraft carrier and existing anti-ship missile warhead, the structural target with ribbings and experimental semi-armor-piercing warhead were designed with geometer similar principle. The processes of warhead penetrating the ribbings structural and homogeneous targets were investigated experimentally in the shooting range, and the end-point trajectory parameters in hitting conditions and the breakage mode of target were gained. On the basis of the theory of warhead penetrating homogeneous target and with the some hypothesis, the theoretical calculation model for end-point trajectory of warhead penetrating ribbings structural target was found. The results by theoretical calculation to residual velocity of warhead were consistent with that by experimental test.