The invention discloses a remote bridge overload law enforcement system based on video linkage capture. The system comprises a vehicle detection unit, a license plate linkage recognition unit, a video linkage capture unit, and an information display unit. The vehicle detection unit, the license plate linkage recognition unit, the video linkage capture unit and the information display unit are connected to a data acquisition and processing unit which is connected to a remote monitoring unit. According to the system, the automatic collection, screening, uploading and storage of overload vehicle weight, contour, speed, license plate number and an overload video are realized, accurate detection data and decision data are provided for the investigation of an illegal overload transportation behavior, the video capture of an overload vehicle can be selectively carried out, the violation information, image and video of the overload vehicle are stored as the evidence of law enforcement, the evidence is inquired and called through the remote monitoring unit, useless video data is reduced, thus a policeman is extricated from arduous front-line work, and the efficiency of overload detection is improved.