Dujiangyan Longxi Hongkou National Nature Reserve, its special geographical location and climate are vertically differentiated, forming a variety of vegetation types in the protected area. Vertical distribution, except for the subtropical evergreen broadleaf forest of base belt vegetation affected by human activities, only in local areas, the evergreen deciduous mixed forest belt, the deciduous broadleaf coniferous mixed forest belt, the subalpine dark coniferous forest belt, the subalpine shrub belt, The thin vegetation of alpine meadow belt and alpine flowing rocky beach are distributed continuously in the protected area in native or primitive state, showing a complete vertical spectrum of vegetation. There are 208 families, 1063 genus and 2510 species of higher plants recorded in the protected area; of which 161 families, 965 genus and 2,254 species of angiosperms; 10 families of gnatophytes, 31 genus 86 species; 36 families of ferns, 67 genus, 180 species; about 50 families of moss, 100 genus, 390 species. Therefore, the complete mountain ecosystem sequence of the protected area has high scientific value. It is used as a national nature reserve and is derived from this. Figure 1; Rough jungle white beads, growing in Yunnan and Tibet. It is a new species in the Longmen Mountains. Figure 2: Snow lotus flowers of the genus E. scorpion. Picture3/5/7: Guangguang Mountains are about 4,200 meters above sea level and about 4,300 meters above sea level. Figure 4 and 6: Hairy silver flail flowers in high altitude and cold areas; Figure 8: Himalayan plum; Figure 9: Red flower plum.