A refrigerator comprising: a main body; a storage chamber (13, 14) provided inside the main body and having an open front surface; a door (23, 24) provided to open and close the open front surface of the storage chamber (13, 14); and a storage container having a storage space and provided to be withdrawn in the storage chamber (13, 14) wherein the storage container includes: a plurality of guide rails installed to face each other on an inner wall of the storage container; wherein the plurality of guide rails includes a rack gear, and a divider (300, 400, 500) provided to be movable along the plurality of guide rails to divide the storage space into a plurality of storage spaces, wherein the divider (300, 400, 500) includes: an operating unit (310, 410, 510); a divider shaft (340, 440, 540) having both ends movable along the plurality of guide rails; pinion gears (390, 490, 590) coupled to the both ends of the divider shaft (340, 440, 540) to guide the movement of the divider (300, 400, 500) through interaction with the rack gear; characterized in that the divider (300, 400, 500) further includes: a cam gear (350, 450, 550) coupled to the divider shaft (340, 440, 540) and rotating together with the divider shaft (340, 440, 540); an interference member (360, 460, 560) configured to move in conjunction with the operating unit (310, 410, 510) to selectively interfere with the cam gear (350, 450, 550); the interference member (360, 460, 560) includes teeth (361, 461, 563a) provided to engage with the cam gear (350, 450, 550), and when the interference member (360, 460, 560) and the cam gear (350, 450, 550) interfere, the rotation of the cam gear (350, 450, 550) is restricted. a main body; a storage chamber (13, 14) provided inside the main body and having an open front surface; a door (23, 24) provided to open and close the open front surface of the storage chamber (13, 14); and a storage container having a storage space and provided to be withdrawn in the storage chamber (13, 14) wherein the storage container includes: a plurality of guide rails installed to face each other on an inner wall of the storage container; wherein the plurality of guide rails includes a rack gear, and a divider (300, 400, 500) provided to be movable along the plurality of guide rails to divide the storage space into a plurality of storage spaces, a plurality of guide rails installed to face each other on an inner wall of the storage container; wherein the plurality of guide rails includes a rack gear, and a divider (300, 400, 500) provided to be movable along the plurality of guide rails to divide the storage space into a plurality of storage spaces, wherein the divider (300, 400, 500) includes: an operating unit (310, 410, 510); a divider shaft (340, 440, 540) having both ends movable along the plurality of guide rails; pinion gears (390, 490, 590) coupled to the both ends of the divider shaft (340, 440, 540) to guide the movement of the divider (300, 400, 500) through interaction with the rack gear; characterized in that the divider (300, 400, 500) further includes: a cam gear (350, 450, 550) coupled to the divider shaft (340, 440, 540) and rotating together with the divider shaft (340, 440, 540); an interference member (360, 460, 560) configured to move in conjunction with the operating unit (310, 410, 510) to selectively interfere with the cam gear (350, 450, 550); the interference member (360, 460, 560) includes teeth (361, 461, 563a) provided to engage with the cam gear (350, 450, 550), and when the interference member (360, 460, 560) and the cam gear (350, 450, 550) interfere, the rotation of the cam gear (350, 450, 550) is restricted. an operating unit (310, 410, 510); a divider shaft (340, 440, 540) having both ends movable along the plurality of guide rails; pinion gears (390, 490, 590) coupled to the both ends of the divider shaft (340, 440, 540) to guide the movement of the divider (300, 400, 500) through interaction with the rack gear; characterized in that the divider (300, 400, 500) further includes: a cam gear (350, 450, 550) coupled to the divider shaft (340, 440, 540) and rotating together with the divider shaft (340, 440, 540); an interference member (360, 460, 560) configured to move in conjunction with the operating unit (310, 410, 510) to selectively interfere with the cam gear (350, 450, 550); the interference member (360, 460, 560) includes teeth (361, 461, 563a) provided to engage with the cam gear (350, 450, 550), and when the interference member (360, 460, 560) and the cam gear (350, 450, 550) interfere, the rotation of the cam gear (350, 450, 550) is restricted. a cam gear (350, 450, 550) coupled to the divider shaft (340, 440, 540) and rotating together with the divider shaft (340, 440, 540); an interference member (360, 460, 560) configured to move in conjunction with the operating unit (310, 410, 510) to selectively interfere with the cam gear (350, 450, 550); the interference member (360, 460, 560) includes teeth (361, 461, 563a) provided to engage with the cam gear (350, 450, 550), and when the interference member (360, 460, 560) and the cam gear (350, 450, 550) interfere, the rotation of the cam gear (350, 450, 550) is restricted.