Research conclusions: Tertiary and Quaternary igneous rock is largely distributed，unfavorable geology such as landslide，collapse，debris and coal gob area is barely found along alignment，so geological condition is good．Surface and ground water is not well developed，thus it has little effect to engineering foundation，soft soil is not well developed too，but expansive soil and gully is widely distributed． Igneous rock is largely different weathered，the weathering depth various too much and soft layer exist，that has large effect to cutting，tunnel and bridge．Under the effect of landform and structure，dangerous rock and talus is distributed part of section but it is easily cured． Fissure is well developed in some area under the effect of volcanic action that has relative larger effect to alignment，specific research is suggested to do．