Abstract: Surge relief valve is an important safety device for guaranteeing the reliable operation of oil pipeline. In order to improve the dynamic characteristics of domestically-produced surge relief valve, simulation is carried out on its dynamic experiment. The 3D modeling software is used to model the inner flow pass in main valve of relief valve, and the CFX software is used to simulate the inner flow field. Moreover, the one-dimensional simulation software is adopted to simulate the dynamic experiment of relief valve to obtain the dynamic characteristic curve under 3.2 MPa activated pressure of relief valve. The comparison between simulation value and experiment data shows that the simulated dynamic performance index of this domestically-produced relief valve matches well with the experiment result, which meets the requirement that the dynamic response time of relief valve should be less than 100 ms.