The models for new product diffusion proposed by internal researchers since 1990 have been reviewed.  These researches are mainly focused on two fields. Firstly, based on the Bass model, some improved models are proposed,  in which allowing marketing variables, supply restrictions, competitive effects, complementary effects, technological generations, multi-unit purchases and trial-repeat purchases are involved.  Secondly, the new models with newly frameworks are put forward, including some new variables: affordability, heterogeneity, strategy and two phenomena and spatial diffusion, and diffusion of entertainment products.  Compared with further 11 research directions pointed out by Vijay Mahajan, Eitan Muller and Frank M. Bass in 1990, it is conclude that some new progressed are made in this field, although there are some deficiencies in this type of the researches.   It is seen that the rapid growth of the emerging technologies and their product should be concerned as an issue for research in the future.