Abstract: The continuous development of social economy has significantly promoted the development of my country's construction industry. While it has brought opportunities for the development of the construction industry, it has also brought many challenges. With the continuous improvement of people's living standards, people's requirements for buildings are getting higher and higher. In order to further meet people's basic requirements for buildings, it is necessary to start with the infrastructure of construction projects to improve the overall quality of buildings. Among them, the support of deep foundation pits and geotechnical survey are important links in the construction of building projects, which play a vital role in the quality of buildings.