In recent years, consumers changed their shopping behavior gradually. They don’t limit to the physical store to buy but spend more time and money on the e-stores. More and more consumers change their consumption patterns by online shopping to replace the traditional way. Therefore, recommendation system is getting more and more popular in e-stores, because it can assist consumers shopping. In this research, we use an easy way to collect consumer-related data and combined Bayesian Network to build a product recommendation system. We tried to combine innovativeness and Bayesian Network to reduce the complexity on building of recommendation system. We also use acceptance of innovation and internet shopper lifestyle to evaluate their impacts on the attitude and behavior intention of recommendation systems. The results show that our Bayesian based recommendation system has good precision on recommending results.