We examined social structure and daily activity pattern of Silver Pheasant (Lophura nycthemera) and its seasonal variations based on the camera-trapping data collected from May 2014 to April 2016 in Gutianshan National Nature Reserve, Zhejiang Province. An extensive sampling effort of 58 890 camera days across 244 sample sites was achieved, resulting in 5 687 independent detections with 33 276 pictures and videos of Silver Pheasant. We identified 3 946 males and 4 179 females and the sex ratio was (F︰M = 1.06︰1). Group size varied from 2﹣12 individuals. Silver pheasants were diurnal and active from 5 am to 6 pm (Fig. 1) with three activity peaks at 6 am, 11 am and 4 pm, respectively, and least activity at 10 am and 2 pm. Both sexes showed similar daily activity pattern except that males had a longer active duration in the morning (females: 6﹣8 am; males: 6﹣9 am), while the least active time occurred one hour later for males (females: at 2 pm; males: at 3 pm). Kernel density estimation showed that the daily activity patterns of Silver Pheasant varied among seasons (Fig. 2), with two apparent activity peaks in the morning and at dusk during spring and winter, however, activity peaks were less obvious during summer and autumn. In winter, the starting time of the activity postponed, and the ending time of the activity shift earlier in a day compared to other seasons. The daily activity patterns of Silver Pheasant between winter and spring or summer had lowest temporal overlap. Individuals at higher elevation (700﹣1 200 m) were less active at dusk compared to those at lower elevation (200﹣700 m) during summer and winter (Fig. 3). This study provided basic information for the management of the species in the reserve.