The skin care products on Taobao are selected for the study subject，this paper analyzes the number of online reviews，the score of reviews，the favorable ratio and poor ratio affecting the sales by collecting actual data.The results show that the number of online reviews has a very significant impact on the sales of skin care products and the score of reviews has influence and the favorable ratio and poor ratio have no significant effect.This study can provide evidence and guidance for sales and consumer’ s review dealing of online business.