Abstract: Based on the fact of great changes in natural landscape during the past 25 years by an on-the-spot investigation and by a method of macrocontrast, this paper is to reveal relations between the human activity and natural environment in the oasis and determine the general tend of development in order to show our anxiety on the human interference in the nature by a naturally regional complex of the Tugayi in the desert and to make some opinions on the princ. i pie of management in the oasis. Contents are as follows, Ⅰ. Introduction Ⅱ. Tugayi is a natural region complex of typical significance in desert area. Ⅲ. Tugayi is a carrier of thr information reflecting the changes of river course, Ⅳ. The tugayi with a long history of formation and development, has speeded up the process of contracting area in recent years. Ⅴ. The degraded characteristics of the Tugayi in the lower reaches of Keriya River. Ⅵ. The excessive activity of economic development in Yutian Oasis is the main cause which leads to the degradation of Tugayi. Ⅶ. Selection of comprehensive development strategies and preservation of desirable traffic route and development base.