Abstract: This paper takes Hunan Hengdong Wind farm road cutting slope as an example, compared two kinds of commonly used analysis metods for cutting slope stability evaluation, namely, slope stability calculation of landslide stability and quantitative evaluation.To the specific project as a case, on the basis of highway cutting slope landslides caused by the geological conditions, application of the two methods may form the landslide are analyzed. The results suggested that the calculation method of landslide stability is better for the evaluation of cutting slope the stability of large-scale landslide high exploration degree, while, the landslide stability quantitative scoring method is better for small and medium sized, and exploration and evaluation of landslide stability degree, which can reduce the workload and get more accurate conclusion. In terms of the large and complex geological environmental conditions, two methods should be mutually verified, and the conclusion is accurate trusted.