在双边市场框架下纳入具有经济价值和隐私价值的消费者数据，分析平台企业的收费策略选择，揭示平台企业数据利用和收费策略间的内在关系及社会福利影响。研究表明：平台企业总是偏好于向消费者和商家双边收费，但非“知悉-同意”隐私保护原则下的双边收费不能实现社会福利最优；消费者“知悉-同意”隐私保护会影响平台企业数据利用规模，引致平台企业向商家多收费，且单边收费策略和双边收费策略下的社会福利一致；当高隐私关切消费者规模较大、平台企业数据处理效率较高时，“知悉-同意”隐私保护能够实现社会福利的最优或次优。

This paper considers consumers’data with economic value and privacy value in the two-sided market, analyzes the platforms’charging strategies, reveals the underlying mechanism and social welfare impact between data utilization and charging strategy. The results show that platforms always prefer a bilateral charging strategy that charges both consumers and sellers, but the bilateral charging strategy under the “acknowledge and agree” cannot achieve the highest social welfare. The “acknowledge and agree” affects the scale of data of platforms, which yields a higher charge towards sellers, and the social welfare under the unilateral charging strategy and the bilateral charging strategy remains the same. When both the quantity of the high-privacy-concern consumers and the data processing efficiency of platforms are high, the “acknowledge and agree” achieves the best or the second best of social welfare.