Various security and privacy issues have emerged from the SOA healthcare platform. Large amounts of personal data are transmitted daily through the SOA healthcare platform. For security and privacy reasons, the exchanged data should be encapsulated and encoded by a specific standard, a customized standard even. In this study, we first focused on investigating the importance of data exchange and message passing on SOA from the security and privacy viewpoints. Thereafter, we designed a gateway for passing message in the SOA healthcare platform. Subsequently, we initially pointed out the interface utilities on the SOA healthcare platform. Health data format and health packet format were then defined. Finally, the transmission mechanism between the sender and the receiver was exposed. As the practical results in beta-test, the messages could be passed in a secure and reliable routing. These customized messages were able to successfully avoid recognition when they were intercepted by the other P2P streaming tools.