From November 2014 to April 2015, 30 infrared-triggered automatic cameras were deployed in Beijing Wulingshan Nature Reserve in order to collect the latest data of wild birds and mammals. During the period, 27 species of birds, belonging to 14 families and 5 orders, and 10 species of mammals, belonging to 8 families and 4 orders, were detected, which included 4 second class of state key protected species, Koklass Pheasant (Pucrasia macrolopha), Oriental Scops Owl (Otus sunia), Little Owl (Athene noctua) and Chinese Goral (Naemorhedus griseus) (Table 1 and Table 2). The Kolmogorov-Smirnov test indicated the distribution of bird species was normal (Z = 1.534, P = 0.02) whereas the mammal species was not (Z = 0.864, P = 0.44). The number of bird species varied strongly among months. The 6 species that owned the highest relative abundance indexes (RAI) were Roe Deer (Capreolus pygargus, RAI = 60.19), Red-billed Blue Magpie (Urocissa erythrorhyncha, RAI = 34.14), Spotted Nutcracker (Nucifraga caryocatactes, RAI = 27.78), David′s Rock Squirrel (Sciurotamias davidianus, RAI = 23.34), Eurasian Jay (Garrulus glandarius, RAI = 23.34) and Chinese Goral (RAI = 21.99) (Table 1 and Table 2), of which the mammals were selected to conduct daily activity pattern analyses. The results revealed that the daily rhythm of Roe Deer presented a dimodal pattern with peaks at 8:00﹣10:00 and 16:00﹣18:00 (Fig. 1a), while Chinese Goral had active peaks at 2:00﹣4:00 and 20:00﹣22:00 (Fig. 1b). David′s Rock Squirrel was most active at 8:00﹣10:00 in the morning (Fig. 1c). This study provided the latest information about species diversity and activity rhythm of birds and mammals in Beijing Wulingshan Nature Reserve. It′s advisable to use camera trapping to photograph epigeous bird, large- and medium-sized mammals and nocturnal species, however, inappropriate for little rodents or birds resided in trees. This study offered the valuable practical experience in application of camera trapping in wildlife diversity monitoring in mountain forest.