Using MSS data in 1975, TM data in 2000 and 2007 as the source of information, the current situation and change of desertification of Shaanxi Province were studied from 1975 to 2007 through a scientific desertification classification system and interpretion symbol, and suppotted with the geographic information system. The results showed that the total area of desertification was 82300 km², accounted for 40.15% of Shaanxi Province by the end of 2007. The desertification types include sandy desertification, water erosion desertification and salinization desertification. The main type was the water erosion desertification. The three types of desertification accounted for 7.48%, 32.37%, 0.3% of Shaanxi Province area, respectively. The desertification area keept reversing during the past 32 years, and the reversed amplitude of 2000-2007 was more than that of 1975-2000 years. The sandy desertification land along the Great Wall in Northern Shaanxi Province and the water erosion desertification land in Loess Plateau reversed obviously, the water erosion desertification land in Qinba Mountains of Southern Shaanxi Province reversed on the whole, at the same time, some areas was developed.