In order to verify the reliability of the new venting network and whether the new venting network is suitable for the original process unit, this paper uses finite element method to analyze the working state of venting under full load, and obtains the structure vibration response of the vent pipe network during the emergency shutdown of the whole plant. This paper puts forward some measures to reduce the vibration of the pipe network.The analysis and improvement provide certain reference for the design and dynamic response of the vent pipe network structure of similar natural gas treatment plants.