Abstract: Following the development of society and the improvement of people's legal awareness, the standardization, accuracy, and scientific senses of fire investigations have been increasingly paid attention. By using the traditional technology on fire accident investigations, due to the violent combustion, explosion, smoke and other facts, the facilities and objects in the original building were seriously damaged, which made it difficult to carry out the fire investigation tasks. Efficiency was low, and the fire investigation conclusion lacked accurate science data supports. The smart fire- fighting system can provide accurate prediction on static data and dynamic data during disasters for fire accidents, which made a big improvement of solving the technical problems of traditional fire investigations, and provide an important basis for the identification of fire causes and extended fire investigations. 

Key words: fire protection, smart firefighting, fire investigation, smart fire-fighting system