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As the eco-environmental security guarantors for water source, Xichuan and its hydro-ecological condition play important roles in Middle Route Water Transfers Project from South to North. Via analyzing the soil, water quality, rock and vegetation et al., we studied the current extend of rocky desertification in Xichuan. Considering the local situation, we analyzed the human factors and natural factors that contribute to the rocky desertification in Xichuan, which are helpful in reducing rocky desertification and worthy of promoting.