Collaping hill is a special form of soil erosion in red soil region of southern China,and causes extremely serious harm. Gan County Gang slope cutting open staircase collapse control areas collected in different years of growing citrus were used to make correlation analysis of soil samples to study the dynamic changes in different years and to develop the process of governance in the area of soil particles collapse post body composition and soil nutrients. The results showed that soil silt,clay contents had a significant increasing trend (P＜0.05) with the increase of planting years,toward the loamy soil texture and fine direction of development. At the same time each soil nutrient content also showed a significant increasing trend (P＜0.05). Gravel,sand and soil nutrient was significantly negatively correlated with the nutrient of silt and significantly positively correlated with clay content. After a comprehensive analysis,a deep cutting open staircase was used to develop cropping area to restore dilapidated granite soil. Effect of desertification was obvious and effect of soil restoration with longer years of planting was more significant. The results will be helpful for scientific controlling collapsing erosion and improving the economic efficiency of controlling.