Abstract: The suslik, Citellus erythrogenus, is distributed in Inner Mongolia and Xinjiang Uygur Autonomous Region in our country.lt is one of the representative Rodent in the mid-teinperate desert steppe.Our survey in 1977, revealed that They prefered the habitats as terrace and flood land, and live on vegetative food as Allium and Stipa.The reproductive period began in April, we observed 68 susliks in mid May, the male reproductive organs were in rest status, aud the females had a pregnant ratio of 94.5%, Litter size was 4-6, and a considerable dead embryos had been found (30.3%)The daily activities were observed on May 11-13, 1974.We found out that the animal is a dayly active rodent,being most active in 12-14 O’clock.The Susliks hibernate at the last ten days in September and wake up at the last ten days in March next year.Generally the structure of burrow is simple, one burrow with only one opening.The most simple one has only a short tunnel, but the hihenation burrow is rather complex, it has nest, tunnel and blind endings.

摘要： 赤颊黄鼠(Citellus erythrogenus)在我国仅分布于内蒙古和新疆。在内蒙古它是中温型荒漠草原亚带植被的代表鼠种之一,主要沿北部(东苏、西苏、二连,四子王,达茂、乌拉特中后联合旗)中蒙边境一带,呈条带状均匀分布。有关它的生物学特性,在国外虽已有一些研究,(见Банниов1954,Громов и др.1965等),但在我国还未见报道。