Abstract: With the rapid improvement of the social and economic level, the state has gradually paid more attention to the construction of infrastructure and transportation. Under this background, my country's road and bridge engineering projects have gradually increased and the scale has been continuously expanded. In the process of road and bridge construction, there will be soft soil foundation problems. At the same time, the determined construction route involves many factors and cannot be easily changed. Therefore, in order to ensure the quality of road and bridge construction and the safety and stability of the project, it is necessary to improve the technical level of soft soil foundation construction. In view of the fact that soft soil foundations are common in road and bridge construction and have a direct impact on construction quality, it is necessary to strengthen the analysis of soft soil foundation construction technology based on the actual construction situation, and do a good job of strengthening the soft soil foundation to ensure that the road and bridge engineering can reach the construction standard.