Abstract: In recent years the land use/cover change has received increasingly more attentions，and becoming one of the fundamental fields of global changes research. It is necessary to understand distribution of LUCC for planning，exploitation and management of land resource in those tender regions. RS and GIS are powerful techniques and methods in capturing oasis LUCC date and analyzing its spatial change. In this paper，a total of four phases of MSS and TM images of Mare Oasis of Turkmenistan in 1976 and 2010 and Yutian Oasis of China in 1977 and 2011 were adopted as data sources. LUCC and their driving forces were analyzed in oasis with remote sensing and GIS. Both the two study area is located in the central arid region，belonging to the temperate arid desert climate and fragile ecological environment. By comparing Mare Oasis and in Yutian Oasis about the land use /land cover changes，their dynamic evolutions of natural and unnatural factors were analyzed. The results showed that Mare and Yutian Oases have the same types of land trends: the arable land，in-mild saline，water，and some other land type area are increased; while woodland，severe salinization，desertification area are reduced. Lots of land use cover changes have been taken place and exchanges between the two study areas. In Mare Oasis during 1976-2010 years，the area of in-mild saline growing faster，the dynamic reaches is 6.32%，desert area decreased faster，the dynamic degree is -1.69%. In Yutian Oasis during 1977-2011 years，water area increase faster，the dynamic degree is 15.82%，and desert area is reduced faster，the dynamic degree is -2.76%. A combination of natural and unnatural factors lead to the changes，but unnatural factors is the main motivations of LUCC，and during in the unnatural factors，the human activities are the main driving forces. The Mare Oasis terrain is flatter，elevation above sea level is lower，the climate is relatively humid，and soil is more suitable for planting crops. Therefore reasonable population control，government policy-oriented and rational economic development needs are main important factors for sustainable development of arid oasis. As a whole，it is the intense human activities that destruct the wholeness and integrality of the natural oasis，and what is more，the fact is the disturbance of human activities is still aggravating. Through the comparative study of two changes LUCC of the oasis，the dominant factors of oasis land use changes could be clearly explored to provide the reference and idea in the sustainable development of oasis.

Key words: arid region； , LUCC； , dynamic factors； , Mare Oasis； , Yutian Oasis