3 adjacent typical collapse mounds (Ⅰ, Ⅱ and Ⅲ) were selected in Huangniken collapse mound group in Zhuotian Town, Changting County of southwestern Fujian Province, in which vegetation coverage of each collapse mound was 2%, 20% and 95%, respectively; seven plots including upper catchment, collapsing wall (top, middle and bottom part), colluvial deposit (upper and lower part) and channel outlet for each collapse mound were sampled, and the main physical and chemical properties including particle composition, bulk density, water content, pH value, soil organic carbon (SOC), total nitrogen (TN), total phosphorus (TP) and total potassium (TK) in 3 depths (0—10 cm, 10—20 cm and 20—30 cm) of each plot were measured. Meanwhile, spatial variation of the contents of SOC, TN, TP, TK and their stoichiometric characteristics in each collapse mound with different depth and position were analyzed in this paper. The results indicated that with improvement of vegetation coverage (fromⅠto Ⅲ), the contents of SOC, TN, TP, TK and their stoichiometric ratios increased significantly with the exception of TP content and P/K, and the order of increasing range of soil nutrients was SOC＞TN＞TK＞TP, while that of soil stoichiometric ratios was C/P＞C/K＞C/N＞N/K＞N/P＞P/K. Under different depth (from 0—10 cm to 20—30 cm), the contents of SOC, TN, TK and the ratios of C/N, C/P, C/K and N/P generally decreased, while the content of TP and the ratios of N/K and P/K basically remained stable. Variation of soil nutrient contents and their stoichiometric ratios for different position were greatly obvious in each collapsing hill: the contents of SOC, TN, TK, C/N and C/P, C/K, N/P and N/K showed a down-up-down variation tendency along the runoff routes from upper catchment to channel outlet via collapsing wall and colluvial deposit, while TP content and P/K ratio kept relatively consistent. Besides, soil stoichiometry was closely related to nutrient content, silt content, bulk density, water content and pH value by stepwise regression analysis. In summary, the contents of C, N and P were at very low level, especially P content in the severely eroded context of collapse mound.