Based on fractal theory, field sampling and laboratory analysis, the fractal dimension of soil waste-grassland after renovation was studied in Hanzhong, correlation of fractal dimension with soil textural, grain diameters and nutrient content were also discussed, and the prediction model of soil fractal dimension after waste-grassland renovation was built. The results showed that as follow: (1) The fractal dimension of plough soil particles was between 2.55～2.95, the mean value and standard deviation was respectively 2.77 and 0.134.The relationship of fractal dimension of soil particles was significant with soil texture (R2=0.978 0), characterized by the fine soil texture was, the bigger the fractal dimension was. (2) The fractal dimension of soil particles was mainly decided by the clay content, the between has significant positive correlation; the forecast model built using the fractal dimension and soil clay (≤0.002 mm) was high precision (R2=0.982 7), it can better predict fractal dimension of soil particles. (3) The positive correlation relationship existed between soil fractal dimension and total nitrogen, effective phosphorus and available potassium (correlation coefficients: 0.914, 0.580 and 0.513 respectively) respectively. Fractal dimension of soil particles can be used as the effective indicators of soil fertility conditions. Studies concluding that soil fractal dimension can be a good characterization of soil texture , particle size composition and nutrient status, it will provide certain reference for the determination of nutrient content and sustainable use of land resources after land renovation.