Abstract: Product Life Cycle is the core concept of marketing and it makes great impact on company’s strategic decision.In this article,we considered repurchasing factor on the base of Bass Model and researched the Complete PLC Model.We also analyzed the factors inside or outside enterprises that influence the parameters of the model and validated our model with the actual data of some Chinese commodities.At last,we give some suggestions about companies’ marketing strategy on the different stages.

Key words: product life cycle, bass model, repurchasing