The utility model relates to a high -pressure water mist off -road fire engine, it is little effectively to solve the fire engine structure space, the loading capacity is little, ground flotation is poor, the problem that fire extinguishing efficiency is low, technical scheme is, the rear portion is at a distance from putting the middle equipment warehouse and the fire -fighting equipment storehouse of both sides in the cross country vehicle automobile body, be provided with the water tank on the bottom plate of the cross country vehicle automobile body at equipment warehouse place respectively, high pressure water pump, the high pressure reel, high pressure water mist spray gun and gasoline engine, existing in a fixed tray, high pressure water pump's delivery port links to each other withthe water inlet of high -pressure reel, the delivery port of high pressure reel links to each other with high -pressure water mist spray gun's water inlet, cross country vehicle vehicle body back portion's door window is located the cross country vehicle car body side wall at fire -fighting equipment storehouse place, the utility model discloses space of the car body distributes rationally, and power is strong, and structure space and loading capacity just accord with the setting, satisfy requirement under battle conditions, flexible, road strong adaptability, and the off -road mobility is good, its advantage of putting out a fire of full play, fire extinguishing efficiency is high.