A refrigerator comprising: a main body; a storage chamber (21, 22) formed inside the main body; a door (31, 32, 33, 34) coupled to the main body to open and close the storage chamber (21, 22) and on which a hinge groove is formed at a lower portion thereof; and a hinge coupled to the main body to rotatably support the door (31, 32, 33, 34) and having a shaft inserted into the hinge groove to form a rotation axis of the door (31, 32, 33, 34), wherein the shaft comprises a door closing preventer configured to prevent the door (31, 32, 33, 34) from being automatically closed when the door (31, 32, 33, 34) is opened at a predetermined angle, and wherein the door (31, 32, 33, 34) comprises a locking part configured to prevent the door (31, 32, 33, 34) from being automatically closed by being caught on the door closing preventer when the door (31, 32, 33, 34) is opened at the predetermined angle; and wherein the door (31, 32, 33, 34) comprises a lower plate forming a lower surface of the door (31, 32, 33, 34); wherein the door further comprises a door cap disposed at an upper surface of the lower plate; and wherein the hinge groove is formed inside the door cap and a lower side of the hinge groove is opened; and wherein the locking part is provided on the door cap and the door closing preventer is not exposed to the outside by being disposed inside the hinge groove of the door cap, the door closing preventer comprises a horizontal cam having a portion convexly protruding in a direction perpendicular to the rotation axis of the door (31, 32, 33, 34), characterized in that the door cap comprises an outer wall forming the hinge groove, and the locking part comprises an inner protrusion protruding from an inner circumferential surface of the outer wall toward the center of the hinge groove to be caught on the horizontal cam. a main body; a storage chamber (21, 22) formed inside the main body; a door (31, 32, 33, 34) coupled to the main body to open and close the storage chamber (21, 22) and on which a hinge groove is formed at a lower portion thereof; and a hinge coupled to the main body to rotatably support the door (31, 32, 33, 34) and having a shaft inserted into the hinge groove to form a rotation axis of the door (31, 32, 33, 34), wherein the shaft comprises a door closing preventer configured to prevent the door (31, 32, 33, 34) from being automatically closed when the door (31, 32, 33, 34) is opened at a predetermined angle, and wherein the door (31, 32, 33, 34) comprises a locking part configured to prevent the door (31, 32, 33, 34) from being automatically closed by being caught on the door closing preventer when the door (31, 32, 33, 34) is opened at the predetermined angle; and wherein the door (31, 32, 33, 34) comprises a lower plate forming a lower surface of the door (31, 32, 33, 34); wherein the door further comprises a door cap disposed at an upper surface of the lower plate; and wherein the hinge groove is formed inside the door cap and a lower side of the hinge groove is opened; and wherein the locking part is provided on the door cap and the door closing preventer is not exposed to the outside by being disposed inside the hinge groove of the door cap, the door closing preventer comprises a horizontal cam having a portion convexly protruding in a direction perpendicular to the rotation axis of the door (31, 32, 33, 34), characterized in that the door cap comprises an outer wall forming the hinge groove, and the locking part comprises an inner protrusion protruding from an inner circumferential surface of the outer wall toward the center of the hinge groove to be caught on the horizontal cam.