The invention belongs to the technical field of city security, and discloses an abnormity analysis and alarm control system and method. The system comprises an alarm terminal, a message center module,an alarm receiving terminal, an abnormity analysis server, a Webservice data analysis server and a GIS linkage server. Distributed cloud deployment is adopted so that the security can be guaranteed and the extensibility of the system can also be enhanced. The distributed deployment mode is applied to the message center module and the abnormity analysis server so that the security of the system can be greatly enhanced; and distributed deployment according to the regions can be realized for the abnormity analysis service, and collaborative analysis between different regions can also be realizedso that the throughput capability of abnormity analysis can be greatly enhanced. In the application layer, the system can maintain the alarm link to be unobstructed in real time through the Asteriskserver and the heartbeat packet so that the stability of the application can be greatly enhanced.