Product brand innovation and its diffusion model

Under the network environment, product brand innovation of small and medium-sized enterprises (SME) is regarded as an important strategy and means to tackle fierce competition. In this paper, the method of system theory is used, and some factors of product brand innovation (PBI) that are influenced by network environment are analyzed; the basic theories about PBI are explained. Meanwhile, in order to confirm the fastest point or period of diffusion of PBI, the inherent mechanisms of diffusion course and diffusion model are analyzed, etc. And they offer decision-making theory foundation for the enterprises. Finally, it points out the future direction.