The invention relates to a passing vehicle tracking and speed measuring method integrating a multiple-target radar and video information. A plurality of vehicle targets are subject to continuous tracking and speed measuring by the multiple-target radar and a camera, and the capturing records are made. The method specifically comprises the following steps of (1) analyzing videos shot by the camera in real time, and detecting an image area of the vehicle; (2) performing front and back frame correlation analysis on the detected image area of the vehicle, and realizing a continuous tracking on the vehicle target; (3) performing space calibrating on the position information of the vehicle obtained by the multi-target radar, and correlating with the detected image area of the vehicle; (4) capturing the images of the vehicle target entering the capturing area, and recording the correlated radar speed measuring information. The method provided by the invention has the advantage that the corresponding relationship between the multiple vehicle targets and the radar speed measuring information in the video scene is effectively solved, so as to perform accurate speed measuring and overspeed judging on the multiple vehicle targets.