Abstract: In recent years, the growth of China's overall economic level and the progress of science and technology make the market demand for engineering construction more and more large, for its quality requirements are higher and higher. As one of the major development projects in the engineering construction industry, the bridge and tunnel engineering involves relatively many and complex links and fields in the actual construction process, so there are many construction points, need relevant construction personnel to pay more attention in the actual construction process. In order to improve the overall construction quality of the tunnel engineering of road bridge in our country, this paper will systematically expound the excavation and support technology involved in the actual construction process of the tunnel engineering of road bridge, and a comprehensive analysis of the construction needs to pay attention to the main points.