For the study products diffusion question in non molopoly of Bass models,this paper present the competition and diffusion model about two products in advertisement and analyzes the procedure of competition and diffusion using economic method.

• 本文基于巴斯模型在非垄断情形所遇到的产品扩散问题 ,提出了在广告媒介下两种产品的竞争与扩散模型 ,并对不同情况下产品竞争扩散过程进行了经济分析 ,推广了单产品巴斯扩散模型。