In order to utilize the shuttletype check valve in the field of mediumpressure & largediameter pipeline, the flow characteristics of shuttletype check valve was simulated by using ANSYS150 Fluent software. Based on κ-ε standard turbulence model, the discrete method of first order windward format and Simple algorithm were used to make simulation. Through comparing with traditional lift check valve, the variation and distribution of velocity, pressure and flow resistance coefficient of the two check valves were simulated and analyzed in the process of opening.The results show that the fluid velocity and pressure distribution of the shuttletype check valve are more uniform, better symmetry, and the speed gradient is significantly reduced. Maximum speed of the shuttletype check valve is about 045 times the lift check valve. Flow resistance coefficient of the shuttletype check valve is obviously smaller than the lift check valve. And the flow resistance coefficient of the shuttletype check valve decreases significantly on 5%~15% opening. Especially, the relative reduction of the flow resistance coefficient is 884%,and flow resistance coefficient of the shuttletypecheck valve is 189% higher than the lift check valve on 5% opening. Therefore, the shuttletype check valve doesn’〖KG-*2〗t have a large impact during the whole opening process, which reduces the noise of the water flow impact disc and improves the antiwater hammer characteristics.