The invention discloses a conveyance limiting device for a vegetable cutter. The conveyance limiting device comprises a rack, a first swing arm and a second swing arm. The two sides of the rack are hinged to the front end of the first swing arm and the front end of the second swing arm correspondingly. A limiting rotary shaft is arranged between the rear end of the first swing arm and the rear end of the second swing arm, and the two ends of the limiting rotary shaft are connected with the first swing arm and the second swing arm in a rotating mode. One ends of conveying belt rotary shafts are provided with a fourth belt, and the conveying belt rotary shafts are connected through the fourth belt and a fifth power device. The fifth power device is arranged at the bottom of the rack. The limiting rotary shaft is attached to the upper surface of a first conveying belt. By the adoption of the conveyance limiting device, food materials cut to be in a block shape and a bar shape can be conveyed to a slitting or dicing device to be cut continuously, and a limiting effect can be achieved while cutting is conducted. On one hand, vegetable cutting efficiency is effectively improved, the food materials can be arrayed neatly, vegetable cutting quality is guaranteed, and the dimensional consistency in vegetable cutting can be ensured; and on the other hand, workloads of operators are effectively reduced, and the danger of cutting the fingers is effectively avoided.