Abstract: The results of the energy flow analysis on litter and decomposing organisms showed that energy to be input into litter is about 3769.42kJ/m2/a owing to plants death; the litter energy mass is about 3424.10kJ/m2; the energy consumed by decomposers is about 1141.67kJ/m2/a, 71.87% of which is used for respiration of decomposers. At present, inputing energy is more than outputing energy in the process of energy flow between litter and decomposers, energy is on accumulating stage in Aneuroplepidium chinese grassland. Energy mass stored in litter will be 11305.61kJ/m2 and in decomposers will be 1475.20kJ/m2 at steady state.