The invention discloses a closed loop consistent monocular active visual automobile outline global free rebuilding system and method, and aims to solve the problem concerned with closed loop consistent monocular active visual automobile outline global free rebuilding. The closed loop consistent monocular active visual automobile outline global free rebuilding system mainly consists of an externalcamera (1), a support platform (2), an internal camera (3), a laser projector (4), an adjusting base (5), a ball head connecting rod (7) and a three-dimensional target (8). The closed loop consistentmonocular active visual automobile outline global free rebuilding method comprises the four steps of closed loop consistence calibration, closed loop consistence optimization, laser plane calibrationand automobile outline rebuilding. The closed loop consistent monocular active visual automobile outline global free rebuilding system and method have the advantages of simple structure and reliable performance.