Empty ring sewing up device of sewing machine

A miss loop sewing-in device for a sewing machine, attaches a first nozzle, a second nozzle and a third nozzle on a suction pipe of a miss loop disconnecting means, wherein, the first nozzle sprays an air flow absorbing the miss loop in the suction pipe for cutting off the miss loop at the vicinity of the sewing ending terminal; the second nozzle sprays and air for returning the cut-off miss loop from its midway part to perform a blow-return moving to the vicinity of the suction mouth; the third nozzle blows back the returned miss loop to a miss loop holding device side provided at the near side of a needle location section; and these nozzles sprays out the airflow according to the sequent from first to third. Therefore the invention not only can reliably and stable stably absorb the miss loop in the suction pipe for cutting, but also the cut-off miss loop will not be caking and can be reliably and successfully blew out to a specified direction.