It is through the development and construction of urban smart emergency information release systems that database and terminal construction, data analysis and processing, information release and data use are conducted. Through advanced communication technology, GPS technology, digital broadcasting and more, information is released for emergencies and crowds are guided. With the help of big data, targeted guidance is given to each area. By selecting data from public security, transportation, meteorological and other governmental departments, and cooperating on emergencies and rescues, support is provided for emergency rescue and decision-making for terrorism threats. Applying addressable FM wireless digital broadcasting and audio and video display terminals to public emergency platforms at all levels, along with building information publishing platforms integrating TV, radio, mobile phones, early warning receivers, and early warning electronic displays for different groups, will ensure the use of urban smart emergency information release systems for the effective and timely regulation and processing of public emergencies.