Abstract: Personal health record (PHR) sharing is an efficient and convenient service to exchange medical information. To achieve information sharing, the data owners upload the personal files to a third-party cloud data server. However, the data privacy is worth considering. This scheme provides the data confidentiality and achieves fine-grained access to attributes based on ciphertext-policy attribute-based encryption（CP-ABE） scheme. Moreover, our attribute revocation property is used to handle the changes of user access permissions. Finally, the scheme is proved to be secure under the selective-attribute and chosen plaintext attack model under the learning with error （LWE） problem without random oracles.