Protection structure of mountain road side slope and construction method thereof

The invention relates to a protection structure of a mountain road side slope and a construction method thereof, and belongs to the technical field of mountain road slope protection. The protection structure comprises a base layer, a surface layer, a first grass curtain layer and a second grass curtain layer which are sequentially arranged on the surface of the side slope, wherein a raw material of the base layer comprises nutrient concrete, soil and mixed seeds are added into the nutrient concrete, the adding amount of the soil is 10-20% of the total weight of the nutrient concrete, and the adding amount of the mixed seeds is 0.1-3% of the total weight of the nutrient concrete. According to the protection structure, through mutual cooperation between the base layer, the surface layer, thefirst grass curtain layer and the second grass curtain layer, the soil and the mixed seeds are added into the nutrient concrete of the base layer, so that the mixed seeds are conveniently grown intoplants, the stability of t