Abstract: As an important part of my country's highway bridge construction, culverts and tunnels play an important role in improving the efficiency and quality of my country's highway bridge engineering. In view of the complex terrain in my country and the construction of culverts and bridges involving many construction techniques, a little carelessness may affect the use of the entire highway and bridge engineering. Therefore, when carrying out engineering operations, the construction unit must strictly follow the relevant specifi cations and set in advance. The technology of construction can ensure the smooth development of engineering operations, and at the same time provide guarantee for the subsequent smooth operation of the bridge project.Based on this, based on a large number of materials, this article combines its own experience to study the construction technology of culvert tunnels, aiming to promote the development of related work, help the construction unit to further strengthen the processing of relevant technical details and key points, and promote highway and bridge engineering further improvement in quality.