Abstract: In recent years, the urbanization process has deepened, people's living standards have improved, and more and more people have poured into cities. Urban infrastructure is the foundation for maintaining people's normal life. Only by ensuring the integrity of infrastructure can it be better Serving the people. However, through the investigation of the actual situation of the municipal water supply and drainage project at this stage, it is found that there are some problems in the planning of the current municipal water supply and drainage project, which affect the quality of the water supply and drainage project, and is not conducive to the construction and development of the urban environment. Especially under the premise that people's awareness of energy saving and environmental protection has been continuously improved in recent years, it is even more necessary to increase the construction of municipal water supply and drainage projects to ensure that the planning and design of municipal water supply and drainage projects are more scientific. Based on this, this article analyzes the urban municipal water supply and drainage planning and design, and proposes a specific municipal water supply and drainage system planning and design plan, which is for reference only.