Detecting pin and detecting device for detecting profile tolerances of moulding surfaces

The utility model is suitable for the field of part detection, and provides a detecting pin and a detecting device for detecting profile tolerances of moulding surfaces. The detecting pin comprises a handle, a detecting part and a guide part; the handle is connected with the detecting part, the detecting part is connected with the guide part, and a joint of the handle and the detecting part is provided with a work bench. By arranging the work bench on the detecting pin, moulding surface precision can also be detected when a hole site is detected, and therefore manufacturing cost is reduced, and detection efficiency is raised.