Abstract: Secondary research of Wenchuan earthquake debris flow accumulation to vegetation restoration measures, provide a reference for the debris flow disasters and similar artificial vegetation recovery in Mianzhu City, Sichuan Province, the Qing Pingxiang Wenjia gully debris flow natural vegetation body as the research object, a random set of plots, with the Simpson index and Shannorr-Weiner index in the investigation plots the vegetation coverage, uniformity, diversity, the importance value of vegetation composition, analysis. Through field survey found, the Wenjiagou debris flow area of natural vegetation restoration of 42 species, belonging to 23 families and 37 genera, including 13 species of Compositae, Gramineae, Rosaceae, 5 3, 2 kinds of amaranthaceae. All plants, 1, 2, 15 annual and biennial herbs, 15 species of perennial herbs, 1 species of pteridophytes, 5 species of trees, 6 kinds of shrubs.