Abstract: Considering the asymmetry of product quality information in e-commerce platform market, the information disclosure strategy of the platform and the seller's quality decision are analyzed. The results show that, the platform enterprise will choose to check the seller's product quality when the cost of quality inspection is not high. When the product is high-quality, the quality signal is sent. Otherwise, the platform enterprise will not check the product quality and also not disclose the real information when lacking corresponding incentive mechanisms. A game model between the seller and the platform enterprise is constructed. The mechanisms are designed to encourage the seller to improve the quality and the platform enterprise to check and disclose the information. From the perspective of the relevant government agencies and the seller, the corresponding suggestions about promoting the platform healthy development are proposed.