To investigate the status of urban biodiversity in Shenzhen and learn the habitat use patterns of the key ungulate species of the region, wild boar (Sus scrofa), from April to October 2019, we conducted a camera-trapping survey in the Wutong Mountain National Scenic Area, Shenzhen, Guangdong Province, to monitor the activities of wild mammal community and the habitat spatial use of wild boar. The study area was divided into 1km × 1km survey grids, with one camera-trapping station set in each of the 32 blocks. With a total survey effort of 4 460 camera-days across the 32 stations, we recorded 13 mammal species belonging to 4 orders and 8 families, of which 10 were natively distributed species and the other 3 were introduced by human. Among the detected large- and medium-bodied wild mammals, wild boar was the most detected species IRA = 27.13), followed by the Chinese ferret badger (Melogale moschata, IRA = 8.30), leopard cat (Prionailurus bengalensis, IRA = 7.17), masked palm civet (Paguma larvata, IRA = 5.38), Northern red muntjac (Muntiacus vaginalis, IRA = 2.24), small Indian civet (Viverricula indica, IRA = 0.67), Chinese porcupine (Hystrix hodgsoni, IRA = 0.45) and hog badger (Arctonyx collaris, IRA = 0.45). The Northern red muntjac was first recorded in Shenzhen. The grid occurrence rate of wild boar was 81% across all surveyed blocks. A relatively abundance analysis at individual block level (ITRA) showed that, the central area of Wutong Mountain was the most utilized region by wild boar, followed by some blocks along the northern edge of the study area. Such a spatial utilization may be attributed to the spatial patterns of human disturbance and food abundance. This study determined the composition of mammalian community in Wutong Mountain, and will provide valuable baseline data to the conservation of urban biodiversity and the regional conservation planning of the mega-cities in Pearl River Delta.