Abstract: By analyzing the causes of fires about the electrical cabinets of wind turbine, summarized the main types and characteristics. A complete set of fire extinguishing devices and control systems has been designed. By adopting new fire extinguishing agents and intelligent detection technologies, rapid detection, precise location and efficient fire suppression of fire situations can be achieved. After testing, the system responds quickly and has a good fire extinguishing effect, providing a reliable guarantee for the fire safety of the electrical cabinet of the wind turbine.