The invention discloses a linear structure light dynamic measurement benchmark-based vehicular pavement primary crack collection system, and aims at solving the problem that a pavement crack image cannot be corrected in real time when an automobile is in a motion state. The linear structure light dynamic measurement benchmark-based vehicular pavement primary crack collection system comprises a draw hook frame (1), a bracket (2), a cast instrument (3), a cast instrument clamp (4), a vidicon (5) and a vidicon clamping plate (6). The linear structure light dynamic measurement benchmark-based vehicular pavement primary crack collection system disclosed by the invention is relatively low in cost, simple in structure, high in detection accuracy, simple to operate, easy to install and reliable in performance.