Abstract: In order to understand the restoration status of food source plants diversity in damaged habitats of rare animals in Jiuzhaigou earthquake-stricken areas, the diversity and composition of food source plants were systematically investigated by using the method of sample line and quadrat survey from 2019 to 2020. The results showed that: (1) There were 289 species of food source plants in quadrats/lines, including 69 species of trees, 122 species of shrubs and 98 species of herbs, accounting for 24%, 42% and 34% of the total species respectively; (2) The species of trees, shrubs and herbaceous plants in severely damaged and moderately damaged forest land were relatively single, and the number of food sources plant species was significantly lower than that in lightly damaged and undamaged forest land; (3) After artificial afforestation, the biological diversity of the area was gradually improved, and there were some pioneer food source plants in damaged habitats, such as Rhus punjabensis var. sinica, Sorbaria arborea, and Fragaria vesca. It reflected that short-term artificial promotion of vegetation restoration had a good positive effect in the process of artificial restoration in damaged habitats. (4) The richness index and diversity index of food source plants in severely damaged and moderately damaged forests were significantly lower than those in slightly damaged and undamaged habitats, but there was an opposite trend for the evenness index. The results objectively showed the dynamic changes of food source plants in the damaged forest after the earthquake, and played an important role in the protection of rare and endangered animals and plants in this area.