Civil engineering is the general name of science and technology for building various engineering facilities. It not only refers to the application of materials, equipment and technical activities such as survey, design, construction, maintenance and repair, but also refers to the object of engineering construction. That is, all kinds of engineering facilities, such as houses, roads, railways, pipelines, tunnels, bridges, canals, dams, ports, power stations, airports, offshore platforms, water supply and drainage, protection works, etc., which directly or indirectly serve human life, production, military affairs and scientific research.

"Urban planning" is to study the future development of the city, the rational layout of the city and the comprehensive arrangement of various urban projects. It is the blueprint of urban development in a certain period, an important part of urban management, the foundation of urban construction and management, and the premise of urban planning, urban construction and urban operation.

Urban planning is to plan the development of urban economic structure, spatial structure and social structure on the premise of development vision, scientific demonstration and expert decision-making. It plays an important role in guiding and standardizing urban construction, is the preliminary work of urban comprehensive management, and is the leader of urban management. The complex giant system of the city determines that urban planning is a complex continuous decision-making process that is constantly adjusted, revised, improved and perfected with the long-term development and operation of the city.