An intelligent wireless cabinet fire monitoring system comprises cabinet monitoring terminals of a fire detector, a fire controller, an automatic fire extinguishing device, etc. in the cabinet. The fire detector transmits detected temperature information, smoke information and fire information in the cabinet to the fire controller. The fire controller determines whether a fire disaster occurs according to the received data, and furthermore transmits a fire extinguishing instruction to the automatic fire extinguishing device for performing fire extinguishing operation. Simultaneously the fire controller stores the received data information and transmits the received data information to a monitoring host computer in a monitoring room in which the cabinet is arranged. The monitoring host computer is used for performing parameter setting, data displaying, early-warning analyzing, fire extinguishing controlling, history inquiring and decision supporting. The intelligent wireless cabinet fire monitoring system has the functions of monitoring an operation state in the cabinet in real time, intelligently determining the fire state in the cabinet, automatically performing a fire extinguishing treatment on the environment in the cabinet, and recording and storing the monitored data information from operation of the system, thereby performing intelligent prejudgement and analysis on the operation trend of the cabinet.