The utility model discloses an unilateral presser foot of buffering limit structure has, it includes one with the connecting piece of sewing machine loose joint, presses the presser foot of establishing the cloth, the presser foot has a recess, and the connecting piece is arranged in in the recess and with the fastener loose joint, the bottom of connecting piece is equipped with the spring, and its one end top is supported in grooved underside, the presser foot is unilateral setting, the connecting piece lateral wall still is equipped with a spacing part, and spacing part both ends are extended respectively and are run through the lateral wall of recess, the lateral wall of recess still is equipped with the spacing hole that supplies spacing part to run through, wherein, the presser foot bottom is pressed and is established the cloth during sewing, and its edge forms benchmark portion and coincides or be parallel with the cooperation limit of cloth, the utility model provides an unilateral presser foot of buffering limit structure has, limit structure is cushioned through setting up to its simple structure, simple and convenient just easy realization of use in the unilateral presser foot, not only aim at the sewing auxiliary line easily, and user's user demand is satisfied in difficult production dislocation or skew in the time of can also guaranteeing the sewing.