Objective To study steady flow characteristics at the entrance of curved pipe. Methods Three-dimensional numerical simulation was performed by finite volume method. Results The streamline,axial constant velocity lines in the cross-section,velocity profile along the diameter of the cross-section in symmetric plane,and the distribution of wall shear stress were calculated respectively.The calculated values of the velocity profile along the diameter of the cross-section were found to coincide fairly well with experimental results. Conclusion The outside wall of curved pipe was the region with high shear stress while the inside wall was the one with low shear stress, which might explained that the preferential region of atherosclerosis.