Abstract:The Gurbantünggüt Desert, located in Junggar Basin in north Xinjiang, is the second largest desert in China, fixed and semi-fixed dunes are the main types in the desert. In this paper, 0-100cm above-ground sand were collected by sand traps, which sited perpendicular to the main wind direction at May to September 2015, at the same time, using a portable weather station recorded wind speed, wind direction, atmospheric pressure and other meteorological data. Sand flow characteristics such as sand transport profile, particle composition, particle size parameters and average saltation height of sand were analyzed. Results showed that within 0-100cm, as the altitude (H) increases, the sand transport profile (Q) with a negative power function(Q=a×H-b) decrements, the fitting equation has a high correlation coefficient, 73.7%~97.9%of sand movement mainly in near-surface of the range of 0-40cm. according to the American of system of soil texture standard, the main texture was fine sand(0.1-0.25mm) followed by medium sand (0.25-0.5mm), the mean grain-size(M) which calculated by graphical method of Folk and Ward between 120~250μm. With the growth of height, the content of very fine sand increased,medium sand content reduced,The mean grain-size was showing a decreasing trend. The different of wind speed and local vegetation distribution caused the variation of sand flow structures, average saltation height of sand was positively correlated with wind speed, and the change of wind direction also due to the difference of distribution of average saltation height between each sand traps, the main reasons for this phenomenon may be the difference land surface pattern of both side of monitoring point.