In 2016，the global market size of Internet of things was expanding continuously and the number of equipment connected by Internet of things was rising from year to year. The industrial Internet of things became a hotspot of development，whose investment and turnover accounted for 40% that of the Internet of things industry. Each country actively speeds up the construction of Internet of things；operators from around the world successively planned the deployment of Internet of things，promoted the test and commercial trial of new technologies. The development of Internet of things industry will usher in a new stage. In the coming years，with the rapid growth of Internet of things，the market of Internet of things security will be further expanded.