The invention discloses a pedestrian behavior recognition and trajectory tracking method, which comprises an image analysis algorithm and a trajectory analysis algorithm. collected video data sequentially passes through an image analysis algorithm module and a trajectory analysis algorithm module; The image analysis algorithm comprises the steps of data preprocessing, single-camera pedestrian trajectory tracking and cross-camera association, and camera abnormity recognition, and can achieve face detection, pedestrian detection and feature extraction; And a trajectory analysis algorithm includes calculating and analyzing trajectory data of the pedestrian from the acquired image, and identifying activity behaviors of the customer and the sales. The pedestrian behavior track can be monitoredand recognized in real time, the behavior state of pedestrians is intelligently judged, centralized management of the behavior track of customers and sales is facilitated, and more optimized and moreintelligent services are provided for the customers.