Intelligent fire safety system, based on big data, Internet of Things, cloud computing, artificial intelligence and other information technologies, integrates prevention and management to effectively warn of electrical, gas, fire water and other safety hazards. The system relies on modular intelligent sensors to intelligently sense the low-voltage distribution system, gas system, and fire-fighting water system, and through the intelligent fire-fighting terminals, the physical status data are transmitted to the data center through the Internet of Things, and through the intelligent analysis of big data, it determines whether there are any safety hazards in the monitoring object, and at the same time notifies the safety hazards in real time to the users and the government regulators. Alert information service by the third-party service organization based on the alarm data to implement the hidden danger investigation and rectification, so that the hidden danger foreknowledge and timely investigation, will nip the fire hidden danger in the bud. The real realization of "prevention-oriented, prevention and elimination of combinations".