Based on a long-term (13 a) experiment on effect of hedgerows controlling soil and water loss, composition and fractal features of soil micro-aggregates in slope farmlands with established hedgerows were studied with mathematical statistics. Results show that compared to the pattern of traditional contour cropping, the pattern of contour cropping plus hedgerows obviously increased the content of soil micro-aggregates, <0. 2mm in particle size, especially the fraction of 0.2-0.05mm. Hedgerows significantly increased soil micro-aggregate fractal dimension (D) and aggregation degree, reduced relative enrichment of soil micro-aggregates small in particle size at lower slopes, and optimized slope distribution of soil large- and small-sized micro-aggregates. The soil micro-aggregate D values reflect soil physical properties, soil fertility, and erosion-resistance of slopelands under the pattern of contour cropping plus hedgerow in the purple hill region.