In the paper,a new type of indoor personnel positioning system is propose,which is based on WiFi probe with high accuracy,low cost and strong applicability.Based on the WiFi probe and indoor positioning technology,the system first collects the MAC address and RSSI data of the target user's mobile phone through the WiFi probe,and then analyzes and processes the personnel data in each indoor area in real time through the positioning algorithm.Secondly,the system displays the dynamic of people flow through coordinating transformation and visualization technology,and realizes real-time monitoring of indoor personnel movement.The indoor personnel positioning system based on WiFi probe can be applied to the fields of intelligent building control,fire evacuation and rescue,shopping mall passenger flow analysis,people flow monitoring and traceability.