To ensure the safety of city is something inherent in smart city construction. From 2015 to 2016，the application of the new generation of information technology has been deepened in the field of urban safety. The protection of traditional infrastructure has achieved innovative breakthrough，on the basis of the deployment of perception facilities and information network integration. Production safety，represented by the industrial safety has become a hot topic in the urban security areas. Meanwhile，with the global anti-terrorism situation increasingly grim and the risks in information security increased，a number of countries has strengthened the response to the public safety and cyberspace security.