Disclosed is a method and apparatus for detecting a road line includes segmenting a driving image data into a plurality of segmentation areas, determining a candidate vanishing-point area corresponding to a segmentation area of the segmentation areas, extracting at least one straight road line from the segmentation area, detecting a partial line corresponding to the segmentation area based on whether the at least one straight road line meets the candidate vanishing-point area, detecting the road line of the driving image data by connecting partial lines corresponding to the segmentation areas, and indicating the detected road line.