The invention discloses a multipurpose extensible emergency interactive command and communication system. The multipurpose extensible emergency interactive command and communication system consists of a front-end portable site assessment information dissemination terminal which comprises a man-machine interface module, a communication module, a CPU (Central Processing Unit) control module, a positioning module and a universal data interface; a data center for detecting information disseminated at the front end in real time, transmitting the detected information to a selected extensible command platform, and issuing an early warning to a background interactive calling terminal; the extensible command platform which comprises an extensible software interface, a resource database and an operation calling server; and the background interactive calling terminal which comprises a data exchange platform, a paging transmitter, a plurality of paging receivers, a smart tablet computer and a mobile phone. In the system, a universal smart command platform capable of handling a plurality of burst emergency events is realized in an extensible way, corresponding departments, personnel and supplies become a whole body which can be managed hierarchically, correlated and scheduled uniformly, and all links are prepared in advance through early alarming and planned as a whole, so that time is saved, and a better effect is achieved.