Abstract: Pile foundation technology has been widely used in road and bridge construction because of its simple process operation, high practical value, and can guarantee the quality of engineering construction. In road and bridge construction, the cast-in-place pile is a concealed project with many construction links. Due to the different actual conditions of each project and the difference in the level of the construction team, the quality of the pile foundation construction will be seriously affected. During the construction, the construction unit shall reasonably apply the drilling construction technology to ensure the quality of road and bridge construction. Based on this, this article introduces common problems in the construction of road and bridge pile foundations, analyzes and explores the construction process and technical points of pile foundation drilling operations, and proposes strategies to strengthen construction management for reference.