Characteristics analysis about the regressive successions was good at the vegetation restoration of converting the farmland into forest engineering. The dark coniferous forest distributed widely in Liangshan prefecture, and it was the main forest type of the southwest forest of China. The regressive succession of fir-azalea forest had the features of that the azalea under the canopy substituted the arbor, and the succession would go to the azalea bosk, furtherly the meadow and the rocks. The regressive succession of bamboo(fargesia)-spruce forest or bamboo(fargesia)-fir forest had the features of that it was substituted by the bosk of bamboo(fargesia) , raspberry, and rosebush and so on, furtherly was substituted by Epiobium.sp. It was necessary to investigate the original vegetation community carefully when we resumed the vegetation, inducted the seed or seedling that adaptatd the native climate climax, and planted densely, and let it come into being the close vegetation community.