The invention relates to a schlagblech moving device for a computer type tricot machine, which comprises a schlagblech , two wall plates respectively fixed at the left side and the right side of the top of an oil tank of the tricot machine, and a pressing input shaft positioned between the two wall plates, wherein both ends of the pressing input shaft are respectively inserted into holes of the two wall plates and are connected in the mode of rotating pairs; a bracket is fixed on the outer side face of one of the wall plates and is provided with a servo motor and a speed reducer; one end of the pressing input shaft is connected with an output shaft of the speed reducer after extending out of the wall plates; the pressing input shaft drives the schlagblech to move through two same transmission mechanisms which are provided with eccentric wheels and connecting rods; the eccentric wheels are fixed on the pressing input shaft; the upper ends of the connecting rods and the eccentric wheelsare connected in the mode of rotating pairs, and the lower ends of the connecting rods and a connecting piece fixed on the schlagblech are connected in the mode of rotating pairs; and the connecting piece is connected with a schlagblech guiding piece fixed on the side wall plate in the mode of rotating pairs. The invention has the advantages of simple structure, convenient regulation and high-speed operation fit.