Abstract: Nature reserve usually locates in remote backward areas.Tourism development not only can drive development of economy but also lead to heavy environmental pressure to nature reserve.Unwell development can make nature reserve crushing destruction.Khanas locates in Burgin county of Altay, Xinjiang.Tourism is limited in southern buffer of reserve, with area of 35 km².Khanas Lake and Khanas River valley landscape is the essence of Khanas tourism resources, which is one of the few districts with the most beautiful landscape and the best preserve in Xinjiang.Experts at home and abroad pay close attention to Khanas for its science and tourism value.This paper appraises Khanas atmosphere quality and source water quality, the result is the eco-environment of Khanas is good.Based on three estimating principles(principle of protection, patience degree, and satisfaction), two methods(route method, area calculating method) are used to estimate environment capacity.The final result is that the total environmental capacity is 350,000 person-time, and the totals will add if winter tourism is carried out.Through above analysis, some eco-environment protection measures of Khanas nature reserve have been put forward:(1) Protection is as important as value increase.Abiding by the principle of protection, development and use, appropriate development can be in progress within the scope eco-environment can endure.(2) Protection should be classified.The first grade reserve is core area, which only can be used by scienctifical research, but ordinary tourists and pollution material should be forbiddened.The second grade is buffer of reserve, it is also the essence of tourism resource, nature landscape and primitive human landscape should be protected strictly.The third grade is the outer-ring, which goal is to control industry pollution and beatify landscape.(3) Creature resource should be protected.It includes protection of natural forest, prevention from fire and insect pest, prevention of excessive herds in grassland, protection of rare animals.(4) To prevent and cure tourism pollution is needed.Measures can be taken to decrease atmosphere and water pollution caused by tourism to small degree.Garbage should be classified and disposed.(5) Constructive destruction should be prevented.Life base must consider effectively effects and construction in scenery area should be kept in perfect hewmony(6) To protect human landscape is very important,Such as protecting primitive village, nationality customsetc.