The invention discloses an automobile geometrical-characteristic-point vision three-dimensional reconstruction marker post, and aims at solving the problem that vision detection is carried out through geometrical characteristic points in the automobile shape and appearance detection process. The automobile geometrical-characteristic-point vision three-dimensional reconstruction marker post is characterized by being composed of a marker post body (1), a connecting piece (2), a laser demarcation device (3), a spring (4) and a steel ball (5). The automobile geometrical-characteristic-point vision three-dimensional reconstruction marker post is simple in structure, easy and convenient to operate, easy to install, low in cost and reliable in performance.