In Shanxi province,the starting point of the project is located in the southeast of Yanchi County, at the intersection of National Road 307 and North Ring Road of Yanchi County. The line is generally arranged from east to west along the old road of the original National Road 307, passing through huamachi town and changing to the south at Gaoshawo town. The end point is at the northwest of Gaoshawo Town, with a total length of 47.898km. The whole line is constructed according to the standard of class II Highway, with a design speed of 80km / h and a subgrade width of 12m.