Platform enterprise of supply chain for pricing issue involves charging on both sides of the market. Researches of the traditional supply chain vendors about pricing issue were mainly analyzed from the perspective of the single market, while the platform pricing studies on two-sided market were briefly analyzed from the perspective of effectiveness. Both internal literature and foreign literature rarely research platform pricing issue from the perspective of supply chain costs. Therefore, this paper considers that two platform enterprises’ competitive pricing issue by taking into account the external network and differentiated services to two factors. And it also includes the analysis of these two factors on the optimal two-sided pricing, two of each platform to market demand, as well as their profits.