The invention discloses a navigation aid lamp light intensity detection vehicle video guide method based on a landmark line identification technology. A CCD linear array image sensor is used to acquire one-dimensional array points. Through the detection vehicle speed, two-dimensional landmark line image splicing is realized. A detection vehicle driving guide line is extracted. A detection vehicle drives along a navigation aid light middle line. Lateral shift of the detection vehicle is reduced. According to the invention, the existing method that the detection vehicle carries out video guide by acquiring a navigation aid light image is changed; the stability and the accuracy of guide line extraction are effectively improved; and the operation difficulty of a driver who controls the vehicle body direction through a video is reduced.