A typical parabolic dune in the south margin of the Hobq Desert was taken as the research object.GIS spatial interpolation was used to generate DEM that was obtained by on-site RTK GPS measurement and the topographical factor and morphological parameter were collected.High resolution images were then used to obtain environmental background information.Form changes of parabolic dune can be analyzed by referring to relevant meteorological data.Results show that the flat form of the dune is U-shaped,with its arm pointing to the west.The windward slope is gentle,while the leeward one is steeper in the long section.However,the cross section is dissymmetrical.The average moving speed is 11.69m/a.The axes of the crest move toward WNW-ESE,in the same direction as the prevailing wind or the resultant sand drift.Artemisia ordosicashrub is distributed on the arms as well as the plain area between them.There is an annual decrease of 0.95%in vegetation coverage.Under long-term resultant wind,the dune moves forwards,while the Artemisia ordosica shrub between the arms recover periodically and spontaneously.