Ecological stoichiometry theory, which was put forward to investigate nutrient cycling of marine ecosystem by Reiners, has been incorporated successfully into many research fields such as decomposition dynamics, nutrient cycling and biology ecological response to global change and so on. The ratio of carbon ∶ nitrogen ∶ phosphorus (C ∶ N ∶ P) in planktonic biomass was found to be well-constrained in marine ecosystem. Some analyses indicated the existence of analogous ratios in plants, suggesting that the theory may be applicable in terrestrial ecosystems. Here we tested if the ecological stoichiometry theory is applicable to the typical Karst Peak-Cluster Depression, where our previous studies showed that soil nutrient in the upward slope was higher than in the downward slope. It was speculated that the possible reason could be that the litter carbon, nitrogen, phosphorus and carbon: nitrogen: phosphorus (C ∶ N ∶ P) ratio were the same as soil nutrient. It was also inferred that litter C ∶ N ∶ P ratio could play an important role in the decomposition and nutrient cycling of Karst forested ecosystems. In this study, the slope gradients of litter carbon, nitrogen, phosphorus and their mass ratio in four vegetation succession stages was analyzed in order to understand the spatial differentiation and ecological stoichiometry trail of litter nutrient of plant communities in the typical Karst Peak-Cluster Depression. The results of this study showed that (1) carbon, nitrogen, phosphorus and N ∶ P ratio in litter standing crops increased from the early to the later succession stages, while the ratio of C: ∶ N and C ∶ P decreased. (2) The content of litter carbon, ratio of C ∶ N, C ∶ P and N ∶ P in upward slope were larger than that in downward slope, while the reverse trend was exhibited in phosphorus content and no significantly different nitrogen content was observed among slopes (P<0.05). The result of Canonical Correspondence Analysis (CCA) showed that the succession stages and slope position had greater impact on the litter accumulation, nutrient distribution and storage, compared to that of slope and bare rock. (3) It is known that the litter decomposition and nutrient cycling is mainly constrained by the N ∶ P ratio. Previous research indicated that litter P concentrations and low N ∶ P ratio did not limit decomposition, but litter N concentrations and high N ∶ P ratios showed contrary results. The lack of significant differences among N elements among slopes and significant difference of P elements reflected that the fluctuations of P content affected vegetation litter N ∶ P ratio and the changing decomposition rate in typical Karst Peak-Cluster Depression. Lower N and high lignin content (namely higher N ∶ P ratio) under the case of low P leading decomposition rate become lower, thus lower N ∶ P ratio is easy for litter decomposition. It is presumed that litter decomposed faster in the downward slope and in young-growth plant communities than that in the upward slope and in old-growth plant communities due to the lower N ∶ P ratio. As a result, less litter nutrient was stored in the downward slope and in young-growth plant communities. Therefore, litter in the upward slope, old-growth forests were conducive to the accumulation of nutrients.