Soil nitrogen is one of the important indexes of soil fertility,which is an important role in food production and quality. Soil nitrogen monitoring is not only a hot point of the research of agricultural production,but also one of the hot spot of research of the global climate change,but remote sensing technology provides a quick nondestructive,new technology for soil nitrogen monitoring. In the study, the TM image was used to inverse the vegetation coverage through the NDVI transform,and the surface measurement was used to analyze the relationship of the Image vegetation coverage and measured vegetation coverage,and the two difference on the inversion of soil nitrogen content. The inversion model of the image vegetation coverage and soil total nitrogen content were established. The result showed: the correlation of the Image vegetation coverage and measured vegetation coverage was very significant. The correlation of the vegetation coverage and soil total nitrogen content was very significant,but the correlation of soil alkali solution nitrogen content and the measured vegetation coverage was not significant.