Sewing machine

The utility model provides a sewing machine, which can realize the sewing of a front fly material and the cutting automation of clothes body cloth, so that the working hours and the labor cost can bereduced, and the cost can be reduced. The sewing machine is provided with a garment body fabric, a first front fly fabric and a second front fly fabric which are pressed from above; the sewing needleup-and-down moving mechanism is used for carrying out needle dropping to form a first stitch for sewing the garment body cloth and the first front fly cloth and a second stitch for sewing the garmentbody cloth and the second front fly cloth; and a cutter device that forms a center cut between the first stitch and the second stitch by moving the center cutter up and down toward the garment body fabric, the sewing machine further comprising: an air blow-out pipe that is provided to the presser foot device and blows the end of the first front flap partially overlapping the second front flap fabric in the direction in whic