The invention discloses an intelligent fire hazard early warning system. The system comprises an image acquisition module used for obtaining image information in a monitoring scope in real time; a processing module used for correspondingly processing the image information obtained by the image acquisition module, obtaining flame information in the monitoring scope and determining whether a fire hazard is generated in the monitoring scope; an early warning module used for emitting early warning signals when the processing module determines that the fire hazard is generated in the monitoring scope; and a power supply module used for supplying power to the image acquisition module, the processing module and the early warning module. A fire hazard detection technology integrated with machine vision and image processing is realized, the structure is simple, the system has the feature of non-contact type detection, restrictions of such environmental conditions as space heights, air flow speeds, thermal barriers, dust, humidity and the like are eliminated, flame information can be intelligently detected in real time, the early warning signals can be emitted when the fire hazard is detected, effective monitoring of the fire hazard is realized, and the purpose of giving a prompt for performing fire fighting through early warning at the initial stage of the fire hazard is realized.