[目的/意义] 对《个人信息保护法》实施前后APP隐私政策的变化进行对比，可以有效评估其影响与局限，为后续相关法律法规与政策的制定或修订提供参考。[方法/过程]收集2021年上半年用户活跃度排名前30的APP的隐私政策变化情况，分析其是否受到《个人信息保护法》的影响，对受到影响而发生变化的APP隐私政策，利用建构主义扎根理论的编码方式进行编码、分析，与《个人信息保护法》的内容进行对比，并用未发生变化的APP隐私政策对结论进行验证。[结果/结论]研究表明，随着《个人信息保护法》的实施，大量APP都修改了其隐私政策，显著增加了信息复制权、敏感信息单独同意等权利，但并非所有的条款都带来了显著影响，某些条款缺乏强制力，缺乏详细标准，并未在隐私政策中反映出明显变化。据此，提出后续法律法规的优化策略与关注重点。

[Purpose/Significance] Comparing the changes of APP privacy policy before and after the implementation of the Personal Information Protection Law can effectively evaluate its impact and limitations, and provide reference for subsequent relevant laws, regulations and policies. [Method/Process] This paper collected the changes in the privacy policy of the top 30 APPs in user activity in the first half of 2021, analyzed whether they were affected by the Personal Information Protection Law, encoded and analyzed the changes affected by the influence by using the coding method of constructivist grounded theory, compared them with the content of the Personal Information Protection Law, and verified the conclusion with the unchanged APP privacy policy. [Result/Conclusion] The research showed that with the implementation of the Personal Information Protection Law, a large number of Apps had revised their privacy policies, significantly increasing the right to copy information, the right to consent to sensitive information, etc., but not all provisions had brought significant impact. Some provisions lacked of coercive force and detailed standards, and had not reflected significant changes in the privacy policy. Accordingly, this paper put forward the optimization strategy and focus of follow-up laws and regulations.