The utility model relates to a cold bed stepping toothed plate material detection mechanism which comprises a swing stem, a detecting point and an approach switch, and is characterized in that the triggering side end part of the swing stem is sequentially connected with a hinge I, a pull rod, a hinge II and a slide bar; the detecting point is arranged at the lower part of the slide bar; the slide bar is connected in a sliding manner with a slide track; the slide track is connected with an upright post; the approach switch is connected with the upright post; and a balancing weight is arranged at the other end of the swing stem. Compared with the prior art, the utility model has the benefits as follows: 1, the operational reliability of the cold bed stepping toothed plate material detection mechanism is improved, the normal operation of equipment is ensured, and the yield of a machine set is increased; 2, the working environment is improved, and the consumption of spare parts is reduced; and 3, the inspection and maintenance are convenient, the labor intensity of workers is lowered, and the work efficiency is improved.