Abstract: Four different turbulence models are used to simulate the cavitating flow around a hydrofoil(NACA66),and the influence of turbulence models on the computational results is analyzed.The computed and analyzed results show that:the ASM model and the RNG k-ε model are more stable than the Realizable k-ε model and accurate than the standard k-ε model with the change of cavitation number,and the enhanced wall function is more stable and more accurate than the standard wall function and the non-equilibrium wall function.