An experimental study was conducted for W/ Zr38Ti17Cu10.5Co12Be22.5 composites which perforate 30CrMnMo steel plates at velocity between 1300 m/s and 1700m/s, and the results were analyzed as compared with the tungsten alloy. The results show that the penetration characteristics of composites are different from the tungsten alloy and the depleted uranium alloy, which are mainly presented as two characters. Firstly, under the high velocity penetration, the composites have the phenomena of the amorphous alloy gasification, the tungsten fiber outside of the penetrator buckling and fracture, the backflow of part of tungsten fiber during the penetration process, so the penetrator keeps self-sharping, and the penetration depth is higher than the tungsten alloy. Secondly, according to the analysis of the projectile and target destruction, because of the amorphous gasification, the tungsten fiber outside dynamic buckling and splitting, the stiffness of the penetrator reduction, and the penetration bifurcates, so the resistance of the plate is asymmetric, the ballistic bend and so on, which reduce the depth of the penetration. Meanwhile, the backflow of tungsten fiber gashes the sidewall of ballistic, then the high pressure gas from the amorphous gasification impacts the scratch, which will produce the perfoliate cracks, so it is beneficial to the second damage.