Based on the characteristics of “S” and continuous dynamic changes in the growth of Tmall double eleven parcels，the amount of double eleven parcels is predicted First of all，Tmall double eleven package volume is divided into several continuous interval; then the continuous interval grey number is whitened by information decomposition method，and the interval grey number is divided into white and grey of part sequence;finally continuous interval grey number decomposition of discrete Verhulst prediction model is established to forecast the shortterm Tmall double eleven logistics demand The error analysis shows that the prediction accuracy of the model is relatively high，which can be used as a basis for rational and effective allocation of logistics resources on the third party logistics enterprises of Tmall platform