Abstract: Absrtact: Infrared camera traps are widely used in biodiversity survey and monitoring because of their high efficiency, little impact on wildlife and suitability for various environments. However, there is still a lack of research on the influence of the micro-environment in front of the infrared camera on the shooting rate of wild animals and the difference of the monitoring data of the infrared camera in different micro-environments. From July 12, 2021 to October 23, 2021, five quadrats were selected from Cangshan Mountain at an altitude of 2600~2800m, and three infrared cameras were installed in each quadrat for comparative monitoring, namely, the empty and flat control group in front of the infrared cameras, the branch group with branches in front of the cameras and the stone group with stones. Results A total of 515 independent and effective monitoring photos were taken, including 29 species of birds and animals, including 13 species of mammals in 5 orders, 10 families, and 16 species of birds in 3 orders, 6 families, including 14 species of passeriformes, 1 species of owls and 1 species of cockscomb. There were 14 species of birds in the branch group, 11 species of passeriformes, 8 species of birds in the stone group and 6 species of passeriformes, and only 1 species of birds in the control group. Among the bird photos taken by the branch group, 88% are located on the branches; 76% of the bird photos taken by the stone group are located on stones. The number of bird species and shooting rate were in the order of branch group > stone group > control group (t test, P≤0.05). There are 12 species of mammals photographed in the branch group, 11 species in the stone group and 9 species in the control group. The shooting rate of animals in stone group was significantly higher than that in branch group and control group (t test, P≤0.05). The research shows that the microenvironment in front of infrared camera has a significant influence on the monitoring of birds and animals, and branches and stones attract birds, especially increasing the shooting rate and species capture of small passerine birds. Stones are more attractive to mammals. Attention should be paid to the influence of the micro-environment of infrared camera on the monitoring effect when using infrared camera for species monitoring in the future.