The invention provides an environment-friendly 
missile-gun fire vehicle, which comprises a vehicle body. A 
gun barrel fixing platform is arranged on the upper side of the vehicle body, a 
gun barrel is fixed on the 
gun barrel fixing platform and comprises a 
magazine holder; a controller, an 
elevation angle driving motor, a rotating motor and an 
inert gas 
storage tank are arranged in the vehicle body; the 
elevation angle driving motor is connected with the gun 
barrel fixing platform through an 
elevation angle rotating gear plate; a rotary fort is arranged in the vehicle body, one end of the rotary fort is fixedly connected with the elevation angle rotating gear plate, and the other end of the rotary fort is connected with a gear of the rotating motor through the rotating gear plate; the 
inert gas 
storage tank is connected with the gun 
barrel through an air duct. According to the environment-friendly 
missile-gun fire vehicle, high-pressure gas is taken as a power source; after aiming at a fire source, the fire vehicle can fire a 
carbon dioxide fire extinguishing bomb to instantly extinguish 
flame and isolate 
oxygen, and firefighters do not need to arrive in a fire ground and can quickly extinguish the fire, so that the labor and the materials are saved, and the material and property loss caused by a fire disaster is reduced.