Mountain road construction results in a series of ecological environmental problems such as destroying original vegetation and wildlife habitat,soil erosion,disorder with surrrounding landscape and local environment deterioration.Side-slope protection along the mountain road is closely related to road stability and driving safety;therefore,it is quite necessary to harmonize the road with the surrounding landscape,to beautify the road and to conserve a relative balance for its ecological environment.By using the objective and subjective weighting method,the paper studied the problem of side-slo...