Abstract: From December 2021 to May 2022, 58 infrared cameras were set up in Laojun Mountain area of Wenshan National Nature Reserve, Yunnan Province,Collected data from 48 working infrared cameras, during a total of 5761 camera working days, and 7,881 independent and effective photos of wild animals were obtained. 20 species of animals, 4 orders, 9 families, 5 orders, 19 families, 58 species of birds were identified, including 15 species of wild animals under State II key protection. By calculating the relative richness index (RAI), it is concluded that: The five animals with the highest relative richness index were Dremomys pyrrhomerus (RAI=61.10), Sciurotamias forresti/Rupestes forresti, RAI=20.05), Paguma larvata (RAI=5.92), Atherurus macrourus (RAI=5.44), and Melogale moschata (RAI=4.64). Among the birds, Lophura nycthemera (RAI=8.55) and Leiothrix lutea (Arborophila rufogularis, RAI=10.45) were the five species with the highest relative richness index. RAI=3.54), Schoeniparus dubius, RAI=2.34, brown-breasted flycatcher (Ficedula hyperythra, RAI=1.86). The species composition and relative richness of animals and birds in Wenshan National Nature Reserve of Yunnan were preliminarily mastered by this monitoring, which provided a reference for wildlife research and conservation management.