Abstract: Since entering 1990s, the increase and development of economy because of population, the desertificated question causes the government all around the world, the general concerns of international organization and scientist day by day. That the desertificated degree is appraised issue concerned has already become a new focus of scientific research field of land at present. This text first from desert, desertification, concept appraised to desertification start with, explain the desertificated purpose and meaning further, desertification purpose lying in explaining why the land is desertificated, desertificated course and desertificated development degree and speed appraised, the fragility of the natural environment, and the reason that the land depredate.The article has introduce the domestic and international current situation appraised in desertification in detail, have probed into the following several question emphatically: Desertification and appraise the type, desertification and appraise the principle, desertificating and appraise the method, setting-up and desertificating the hierarchical standard appraised of the desertificated evaluation index system. Because it is a young discipline domain to desertification and study, a lot of desertification basic theoretical question and remain to develop and perfect, desertificated evaluation index system at present exist a lot insufficient, remain we go on further research obviously also.