The fire-fighting robot can take the place of the fire-fighting personnel to enter the scene of dangerous disasters and accidents such as inflammable, explosive, poisonous, oxygen-deficient and dense smoke, collect, process and feed back the data, effectively solving the personal safety of the fire-fighting personnel in the above-mentioned places, data collection and other issues. The field commander can make a scientific judgment on the disaster situation according to the feedback result and make a correct and reasonable decision in the field work.