Abstract: Ochotona erythrotis is endemic species in China, which is distributed in a very narrow region, including part of Qinghai and Gansu provinces. In Sichuan, It was only recorded in Batang county, west Sichuan. The core region of this species was reddish land rock, soil forest, cliff and shrub around Qinghai Lake, main streams and tributaries of the upper Yellow River and the Qilian Mountains of southern Hexi Corridor. In the distributing area of O. erythrotis, there were abundance of sunshine, no summer in whole year, concentrated rainfall, small humidity, strong evaporation. In 2018,O. erythrotis samples were collected in Wanglang Nature Reserve, and some pictures were obtained by infrared camera monitoring on the Minshan and Qionglai mountains with the elevation higher than 3 850 m. Those new distributing areas were largely different from traditional distributing areas in climate. But the new population had very closed relationship with the traditional population.