The utility model provides a move sword structure for sewing machine trimming belongs to sewing machine technical field. It has solved problem how to avoid roll -off in the trimming time line driven sword. This move sword structure for sewing machine trimming includes and flakyly moves the sword body and be located the blade tip part who moves sword body front side that front portion has the cutting edge mouth, and blade tip part's rear portion has line of fall hole, be close to the blade tip part rear portion move the sword body on the line of colluding portion has, collude the line positionand in blade tip part's the outside and move the sword body relatively and extend forward, collude to be formed with between line portion and the blade tip part and collude the line mouth, collude theline mouth and be linked together with line of fall hole. Peculiar motion sword structure through design line of fall hole, collude the line mouth, cross wire casing and a series of direction, limitstructure's design, can avoid the line to move the sword at trimming in -process roll -off well to guarantee the success rate of trimming, improved the trimming quality.