The sharing of information exchange system in the city emergency response command platform is the most basic and most important part. Combination of the actual work of Emergency System construction in Tianjin, this paper between the city and district levels of government emergency response platform and the various departments of professional emergency response system, to establish a standard, reliable data exchange and sharing system, for each dispersion applications to provide information exchange platform for the public to enjoy the sharing and exchange of emergency information resources, to provide information support for the city dispose of emergency incident linkage command.