With the popularization of big data and AI technology, passenger flow is more and more widely used in various industries, such as shopping centers, chain stores, airports, stations, scenic spots, parks, public transportation, museums, exhibition halls and other public places.In scenic spots, parks, stations and other public places, through the real-time monitoring of passenger flow, historical passenger flow and the heat distribution of regional passenger flow, the overall analysis and prediction of the change of passenger flow, to achieve the "limited and wrong peak" control, to ensure the smooth and orderly operation of public places. Improve the timeliness, scientificity and accuracy of tourism statistics and the experience of guests.