In recent years, excavations of mountain tunnel are involved in the development of some major construction in Taiwan. However, it is located between Eurasia plate and Philippine plate, and hot springs are easily founded. Temperature inside the tunnel is always much higher than that outside during tunnel excavation. This is the reason why scheduled tunnels are going to suffer the same problem. In this study, the data collection and the schedule information of the tunnel construction in practical cases are used to probe the factors of how hot spring water affects the schedule of construction. By means of experience of tunnel construction in practical cases and construction records and other information of the scene, valuable references and applications of hightemperature tunnel excavation are expected to be provided.