A sewing machine (100) is provided with: a sewing needle (11) having a needle hole in which a needle thread is inserted; a shuttle having a tip in which the needle thread is captured, whereby the needle thread and a bobbin thread are entwined; a balance (13) having a small hole in which the needle thread is inserted, the small hole being raised from bottom dead center to top dead center, whereby the needle thread is pulled up from an article being sewn, which is to be the sewing product; a center presser (15) for preventing the article being sewn from lifting up; and a drive source for drivingthe center presser (15) so that the center presser (15) is stopped at a fixed height during the period in which the small hole is rising along with the action of the balance (13) after the shuttle has released the capture of the needle thread.

缝纫机(100)具有：缝针(11)，其具有供上线插入贯穿的针孔；釜，其具有通过对上线进行捕捉而使上线和下线缠绕的尖端；挑线器(13)，其具有供上线插入贯穿的小孔，小孔从下止点上升至上止点为止，由此将上线从作为缝制对象的被缝制物提起；中压脚(15)，其防止被缝制物的翘起；以及驱动源，其在将釜对上线的捕捉解除后伴随挑线器(13)的动作、小孔上升的期间，对中压脚(15)进行驱动，以使中压脚(15)在恒定的高度停止。