The invention discloses a large-size commercial vehicle full-view stereoscopic vision measurement system with variable baseline distance, aiming to solve the problem in adjusting the baseline distance of a commercial vehicle full-view image stereoscopic vision measurement system. The system comprises a top plate (1), a transparent cylinder (2), a base (3), a screw (4), a convex mirror (5) and a camera (6). The large-size commercial vehicle full-view stereoscopic vision measurement system with variable baseline distance is small in size, convenient in operation, reliable in performance, high in versatility, easy in installation, low in manufacture cost and high in accuracy, and can meet the requirement for non-contact detection of the Chinese metrological service and quality supervision department as well as the manufacturers.