The invention belongs to the field of sewing machines, and discloses a novel form board lockstitch sewing device which comprises an air pump, a lockstitch sewing machine and a control module. The airpump is arranged outside the lockstitch sewing machine, the lockstitch sewing machine comprises a table top, a pneumatic valve, an air hole and an air hook, the table top is used for placing a fabric,the pneumatic valve is arranged on one side of the table top and connected with the air pump, the air hole is formed in the lower portion of the table top and connected with a first port of the pneumatic valve, the air hook is arranged on the lower portion of the table top and connected with a second port of the pneumatic valve, the control module is connected with the lockstitch sewing machine and comprises a panel and an electric control box, the panel is used for setting sewing parameters, the electric control box comprises a servo board, a first port of the servo board is connected with the panel, a second port of the servo board is connected with the pneumatic valve, and the servo board is used for controlling the pneumatic valve according to sewing parameters. The novel form board lockstitch sewing device has the advantages that the sewn fabric is automatically blown away from the lockstitch sewing machine after sewing operation of the lockstitch sewing machine is finished, andautomatic fabric taking operation of the lockstitch sewing machine is realized.