Abstract: Through the identification and extended investigation of a major casualties fire, this paper summarizes the site characteristics of this kind of fire, discusses the in-depth identification and cause analysis of similar electrical fire, summarizes the extended investigation, and makes suggestions on fire prevention from the perspective of industry supervision and territorial responsibility, which has a strong reference value for the identification and extended investigation of fire causes in other small places.

Key words: fire management, fire investigation, casualties fire, fire extended investigation