In medical management, more and more information technologies are applied to improve work efficiency. For example, the hospital information management system is used to carry out a patient’s basic information and medical management, the wrist one-dimensional QR Code is employed to quickly read or input a patient’s identity (ID) and so on. Information technology brings convenience while at the same time there are certain secure drawbacks in several typical scenarios because of immature technology or management vulnerability, such as, the reports transparency leaks user privacy, access to view the medical privacy record is not strictly controlled, infusion confirmation is without technical authentication, patient wrist ID is easy to be forged, payment is not convenient and so on. The security issues are further analyzed as follows. Healthcare applications are considered as promising fields for wireless sensor networks, where patients can be monitored using wireless medical networks (WMNs). Current WMN healthcare research trends focus on patient reliable communication, patient mobility, and energy-efficient routing, as a few examples. However, deploying new technologies in healthcare applications without considering security makes patient privacy vulnerable. Moreover, the physiological data of an individual are highly sensitive. The main contribution of this paper is to distribute patient’s data securely in data servers and performing the cryptosystems to perform statistical analysis on the patient data without compromising the patient’s privacy.