Based on the improved Bass model, this paper studies online social platforms’ product information dissemination mode. This paper studies the Bass model based on the attenuation effect of user benefits. The dissemination mode of product information is established. It is the effect of product information quality on product information dissemination. Finally, an empirical analysis is made of the communication materials of the films released from 2013 to 2022. It is found that the user switching engine and the user’s consumption have obvious effects on the information transmission. This model has better prediction accuracy and fitting performance than the Bass model. This model can be applied to the calculation of other damped transport rates.