Cloud computing is an Internet-based computing model which provides several resources through the cloud service provider to cloud users on demand based. Cloud computing storage, users are able to access and shared resources offered by cloud services provider at a lower cost. Data protection, reliability, dependency, transparency, data portability are the most important challenges of the various cloud environment. In Healthcare system privacy is the ability to protect the patient’s personal information against unauthorized access. While sharing the healthcare data in the cloud, the clients have handled security and scalable key management. In this proposed work of Merkle hash tree algorithm used to significantly reduce the amount of data that a TPA has to maintain to proof the integrity of the data. CP-ABE perform private verification, delegated verification, and public verification. A privacy-preserving OPOR auditing scheme for shared data in the cloud environment and utilize with signature, to compute verification information on shared data