With the wide application of polyethylene (PE) pipeline in the laying of gas pipe and water supply and drainage pipe, the feasibility of applying polyethylene pipe in the pipeline laying project of X city is explored. To investigate the development and research status of polyethylene pipes at home and abroad, and to determine the scheme of polyethylene pipes used in X city, including the required characteristics and main technical parameters of the PE pipes, based on the natural regional characteristics of X city, such as landform, climate and water resources, as well as the specifications and performance advantages of polyethylene pipes. The process technology of polyethylene (PE) pipe is systematically studied, which mainly involves the production process technology and the connection process at the joint, including the hot melt connection method and the electric melt connection method of the welding and welding connection process, the flange joint connection of the mechanical seal connection process, the connection of the prefabricated steel-plastic transition pipe and the mechanical seal connection and other process methods. The production process plan of polyethylene pipe ensures the quality of the polyethylene pipe used in X city, while the combination of welding process and mechanical seal connection process in the connection process ensures the connection at the joint. The study on the cooperation between the two provides a strong foundation for the construction of X city's polyethylene pipeline project. Based on the above analysis and research, the feasibility of polyethylene pipe as a gas and water supply and drainage pipeline project in X city was further analyzed from five aspects including reliability, environment, occupational safety, risk assessment and economic benefits. Thus conclude that X city pipeline project of polyethylene (PE) pipe has high toughness, small flow resistance, construction is convenient, the deflection is good and the advantages of corrosion resistance, good low temperature resistance, interface to connect with the method of choosing welding and mechanical seal, the risk assessment, safety and environmental and economic benefits is feasible. Therefore, a construction plan suitable for the PE pipeline project in X city can be formulated to guide the construction. The feasibility of this project is in line with China's policy of "replacing steel with plastic", and has important reference value for the further extensive application of polyethylene pipe in China's pipeline transportation projects.