Early warning method based on population flow identification

The invention relates to an early warning method based on population flow identification. The method comprises the steps that (S1): according to monitoring data, an early warning system judges a current danger area according to a set early warning rule, (S2) the early warning system identifies population flow data based on an operator mobile phone signaling recognition, adds the danger area, analyzes regional range population number and population data regional distribution, (S3) according to the corresponding early warning transfer factor content made by a making plan, the early warning system carries out early warning message publish directly on the personnel in the danger region range through an operator base station, and (S4) the early warning system monitors population flow change in real time, judges personnel transfer efficiency, and notifies related regional transfer responsible person to carry out field transfer rescue help. According to the method, based on the population flow identification data, t