In addressing how to effectively utilize the powerful features of cloud platforms to provide users with efficient and convenient services while safeguarding the security and privacy of user data, this paper proposes a cloud platform privacy protection scheme based on data classification, namely the PPP-DCP scheme. Through experiments, it is demonstrated that as the user's project set continues to grow and the classification ratio varies, the PPP-DCP scheme outperforms the PrivRank and PrivCheck schemes, offering superior user privacy protection.