With the gradual strengthening of people's safety awareness in disaster prevention and fire extinguishing, the focus on safety is no longer just on disaster prevention and fire extinguishing, but more on the prevention and evacuation of accident sites.

When encountering a fire and facing multiple escape routes, without proper evacuation guidance and command, individuals and individuals usually take familiar routes or choose routes with more people passing through, which can easily lead to personnel being stranded, leading to group deaths and injuries such as falls and stampedes. In recent years, a series of malignant fire accidents caused by improper evacuation have occurred both domestically and internationally. Most of the casualties were caused by the smoke poisoning at the scene of the fire due to the inability to determine the direction of escape.