In order to study the reliability of peridynamics method in simulating the failure behavior of ice at high strain rate, the numerical simulation of high-speed impact mechanical behavior of ice sphere was realized by self-programming based on the theory of peridynamics, and the calculated results were compared with the experimental results. The results show that the peridynamics method can accurately simulate the complete process of high strain rate failure during the impact process of the ice sphere, and the details of the surface crack diffusion of the sphere and the overall cracking of the ice sphere are well simulated, and the maximum amplitude error of the impact load prediction within the velocity range of 20-60 m/s is 18.2%, and the maximum mean error is 18.4%. At the same time, it is found that in the process of medium and low speed impact of 20-60 m/s, the destruction of the ice sphere takes the hemispheric section as the boundary, the lower hemisphere near the impact surface is crushed, and the upper hemisphere is fragmented, when the impact velocity is greater than 60 m/s, the damage degree of the upper hemisphere will increase sharply as the impact velocity increse; when the impact speed is greater than 100m, both the upper and lower hemispheres are crushed.