The invention discloses an automatic production line integrating tool plates and an automatic circulating type multiplier-speed chain production line. The automatic production line comprises a motor base, a mounting plate, a machine base, upper and lower guide rails, upper and lower power equipment, a motor, an upper blade, a lower blade base, a blade shaft and a lower blade. According to the automatic production line disclosed by the invention, the upper blade can drive the lower blade to synchronously rotate during high-speed rotation; when a to-be-cut product automatically flows into a blade cut-off area, the upper blade can drive the lower blade to automatically cut off the product in the blade cut-off area; the upper and lower power equipment can be matched with an adjustable stroke air cylinder or a tape travel control motor for use, so that the edge of the product is automatically cut orderly through assisting guidance and assisting pushing; the upper blade and the lower blade can freely adjust height of the cut edge; and the gap height between the upper blade and the lower blade also can be automatically adjusted so that the upper blade and the lower blade can be automatically lifted to avoid a product which does not need to be cut. The automatic production line realizes on-line cutting of the product, and also can realize the effect of selectively performing cutting operation on the product or not.