Abstract: Collecting related innovation patent data of key technologies in the field of Internet of things from China Patent Database (Jan 1985—Dec 2010), the patent technologies in this field are analyzed by the view of country specific, overall tendency, technology lifecycle, IPC component, applicant and applicant IPC component.It’s found that there are many bottlenecks and restrictions in the development of China’s Internet of things, while the suggestions and solutions are proposed for patent protection and utilizing strategy in this field.