Abstract: To determine the failure characteristics of spacing protective structures impacted by the active fragment is essential for designing the protective structures for future spacecraft. In this paper, the impact to the spacing protective structures by the novel Zr₅₅Cu₃₀Ni₅Al₁₀ amorphous alloy is studied experimentally on the ballistic gun platform. The debris cloud morphology and its evolutions are obtained by high-speed photography. The contour equations of the debris cloud in front of and behind the target plate are established. Meanwhile, the damage effect caused by the debris behind the target is estimated according to the experimental results. It is shown that the debris cloud morphology of the Zr₅₅Cu₃₀Ni₅Al₁₀ amorphous alloy in front of and behind the target can be described by the Gaussian function and the lemniscate function, respectively. With the increase of the impact velocity, the damaged area on the aluminum target created by the Zr₅₅Cu₃₀Ni₅Al₁₀ debris cloud after impacting the steel target increases initially and decreases afterwards. The perforation diameter on the steel plate increases to a certain level and then remains unchanged.