With the extensive applications of the Internet of things in many fields, Internet of things confronted various problems of privacy protection. As a heterogeneous converged network, Internet of things is particular. This study looks into the basic knowledge and privacy protection technology of Internet of things. The protection schemes mentioned above in the medical health care scene environment have been applied. The framework of the smart home system is proposed, and it implements the security privacy protection platform based on the design and realization of hardware and software, aimed at the security consideration.