Fecha de publicación: 25/04/2023 Fuente: Wipo "BigData" The invention relates to the technical field of tunnel monitoring analysis, and discloses a tunnel monitoring system and analysis method based on traffic flow big data, and the method comprises the steps: obtaining a tunnel monitoring image, and carrying out the standardization processing of the obtained tunnel monitoring image; a self-adaptive tunnel vehicle scene generation model is constructed, and an optimal self-adaptive tunnel vehicle scene generation model is solved by using an improved L-BFGS algorithm; inputting the normalized tunnel monitoring image into an optimal adaptive tunnel vehicle scene generation model to obtain a corresponding vehicle scene analysis graph; and tracking vehicles in the tunnel according to the scene analytic graph of the adjacent vehicles in the tunnel, and carrying out tunnel traffic flow statistics based on a tracking result of the vehicles in the tunnel. According to the similarity of pixel distribution of different vehicles between the adjacent vehicle scene analysis graphs, the same vehicle in the adjacent vehicle scene analysis graphs is identified and marked, and vehicle tracking and traffic flow statistics in the tunnel are realized.