Understanding the distribution pattern of wildlife habitat and its influencing factors is crucial for effective habitat management and species conservation. Based on the records collected in field surveys from 2001 to 2018, we assessed the habitat suitability for Blue Eared-pheasant (Crossoptilon auritum) in Wanglang National Nature Reserve using MaxEnt modelling. Our results suggested that: (1) habitat suitability for Blue Eared-pheasant was mainly influenced by topographic features and climate conditions under extreme periods. Its suitable habitat was associated with annual minimum temperature higher than -14.4℃, elevation from 2430 m to 3100 m, slope lower than 40°, close to the nearest river, and precipitation in the driest month lower than 4.4 mm. (2) There was 102.28 km² Blue Eared-pheasant habitat in the nature reserve in total, covering about one third area of the nature reserve. The suitable and sub-suitable habitat for the species was predicted as 59.41 km² and 42.87 km², respectively, collectively providing ideal natural habitat with sufficient area and connectivity for the species. (3) Higher elevation and precipitation in the driest month that exceed corresponding suitability thresholds were two primary environmental factors limiting habitat suitability throughout the areas that were unsuitable for Blue Eared-pheasant. Recent years, livestock grazing (yaks and horses) has become a main type of human disturbance in the nature reserve, and grazing intensity and region were still in a trend of fast increasing, potentially threatening the population and habitat of Blue Eared-pheasant. Thus, based on our modelling results and field investigations, we provided some conservation suggestions for protecting Blue Eared-pheasant in Wanglang National Nature Reserve from habitat degeneration and fragmentation, including restriction grazing intensity and region, propaganda of wildlife protection concept and laws to local people, and periodical monitoring of water quality of rivers in the nature reserve.