The author analyses the background and mechanism of soil degradation first , points out that natural effect and human activity are the main causes of the soil degradation in China. According to the origin and results of the soil degradation, the soil degradation in China is categorized into seven types, say: soil erosion, soil salinization, soil desertion, soil pollution, soil fertility decrease, soil destruction and the lose of cultivatable land. Finally, in this paper, the author advances some countermeas...