The invention relates to a smoke exhaust, fire extinguishment and dismantling robot which comprises a vehicle body, a chassis walking device installed on the lower part of the vehicle body, a power device, a working device, a waterway system, a hydraulic system and an electric system, wherein two exhaust blowers are arranged on the upper part of the vehicle body; the side surfaces of the two exhaust blowers are respectively provided with a water cannon and a foam cannon; and a dismantling device is installed at the front end of the vehicle body and comprises an arm frame and a dismantling tool which is connected with the arm frame through a quick change coupler. The smoke exhaust, fire extinguishment and dismantling robot is concise in structure and strong in practicability, can be used for replacing a fire fighter to enter into a fire scene with important safety hidden dangers to carry out short distance fire fighting operation, can carry out water and foam remote control spraying and video transmission on the fire scene, has a self-protection sprinkling device and has the functions of large power smoke exhaust, water mist spraying and strong walking and climbing as well as the functions of dismantling, object grabbing and bucket to an obstacle, so that the working efficiency is greatly improved, the safety is high, and the smoke exhaust, fire extinguishment and dismantling robot is convenient to popularize and apply.