The invention relates to the field of intelligent traffic, in particular to a lane line adaptive detection method. According to the method, an image vanishing point attribute principle is utilized, the coordinate transformation is completed, and an interesting region is determined; the interesting region is subjected to layering and blocking, and an edge image is subjected to binarization processing; the line segment features are counted, and the descrambling processing is carried out according to the width features and the brightness features of lane lines; and a table of a projection straight line required in Hough conversion is built, the distance feature of left and right lanes and the mutual parallel features of the two lane lines are combined, and the properest straight line is found out to be used as the current lane line. The lane line adaptive detection method has the beneficial effects that through the layering and the blocking on the images, the algorithm is processed in a local small region; then, the dividing processing is carried out on the edge image, the influence of non-uniform illumination is reduced, and the detection effect on the lane lines with low quality is enhanced; the interference due to characters, vehicles, shadow and the like can be effectively avoided, and the detection accuracy is enhanced; and cos(Theta)*w and sin(Theta)*h are realized in a table look-up mode, and the calculation quantity of Hough conversion is effectively reduced.