The hydraulic characteristics of the curves under the conditions of ice flow were simulated by establishing bend channels with different curvatures based on the volume of fluid(VOF)technology, the RNG k-ε turbulence model and the Lagrangian particle model. The results show that the ice mainly concentrates on the outer bank after passing the curve with obvious gather. The existence of ice increases the lateral circulation of the surface current on the outer bank, which affects the development of the large circulation at the bottom of the inner bank to a certain extent. The maximum water surface velocity at the inlet section of each curve is greater than the outlet. With the increase of the curvature, the outer bank area of the low-velocity flow and the high turbulent kinetic energy area of the ice flow stream continue to increase, and the mainstream area of the curved top section gradually shifts to the inner bank.