Abstract: Technological innovation diffusion in industrial cluster is different from the technological innovation diffusion with many features,and the existed methods are difficult to analyze it.Based on the study of Bass model and technological diffusion innovation,this paper points out that there are limitations of Bass model in studying technological innovation diffusion in industrial cluster,thus expands and establishes the modified Bass model of technology innovation diffusion in industrial cluster.Finally,it analyzes the simulation results.The results show that the modified Bass model is more reasonable and effective than onginal Bass model,and the conclusion is more realistic.Thus,it can provide theoretical and met hodological support for the study of technology innovation diffusion in industrial cluster.

Key words: industrial cluster, technological innovation diffusion, modified Bass model, system dynamics