Abstract:A comprehensive analysis was conducted on the long-term observation data from the five groups of runoff plots set up in Chinese fir young plantation at the Experimental Center of Subtropical Forestry， CAF in Fenyi．Jiangxi．The results showed that the range of surface runoff was 1.47～13.22mm with average of 5.46mm．The range of runoff coefficient is 0.098％～0.852％with average of 0.369％，the range of soil erosion is 0.0051～0.2510 t/hm2a year with an average of 0.1005 t/hm2．During the whole juvenile stage of the plantation，the total surface runoff is 546.0m3／hm2，the total soil erosion was 1005.0kg／hm2，the nutrient loss was 1.9560 kg／hm2 for N，2.2370 kg/hm2 for P，26.777 kg/hm2 for K，and50.049 kg/hm2 for organic mater．We conclude that for the sites with red or yellow soil derived from shale，especially with the well structured soil and thick humus layer，it has strong resistance to soil erosion，andthere are no significantinfluences on soil erosion no matter what the ways are adopted in sites preparation．Comparatively speaking，the hole site proparation way is better than others．Therefore，soil erosion maynot be the main reason for the site fertility degradation of Chinese fir plantation at the sites with this typeof soil．