A refrigerator comprising: a body; a storage compartment inside the body; and a door assembly configured to open and close the storage compartment; wherein the door assembly comprises: a front panel forming a front side and two opposing sides (312, 313) of the door assembly; a rear panel coupled to each of the two opposing sides (312, 313) of the front panel; a door cap (330, 340) configured to cover an upper side or a lower side of the door assembly; and a connection member provided with a first connection unit coupled to the front panel and a second connection unit coupled to the door cap (330, 340); characterized in that the first connection unit comprises at least one locking unit, and a first groove formed in one side of the connection member, wherein the front panel comprises a first coupling unit extended from an upper end to an inner side of the door assembly, a second coupling unit extended from one side of the first coupling unit to a lower side, and at least one first coupling hole provided in an upper portion or a lower portion of the front panel and in the second coupling unit, and wherein the front panel is coupled to the connection member such that at least one portion of the front panel is placed inside of the first groove and at least one locking unit is arranged to couple to the at least one first coupling hole; and wherein the second connection unit comprises a second groove provided in parallel to the first groove and further towards the inner side of the door assembly than the first groove, and at least one second coupling hole provided in one side of an inside of the second groove, and wherein the door cap (330, 340) comprises at least one door cap coupling member disposed inside of the door cap (330, 340) to be extended to an inner side direction of the door assembly to be coupled to the second coupling hole. a body; a storage compartment inside the body; and a door assembly configured to open and close the storage compartment; wherein the door assembly comprises: a front panel forming a front side and two opposing sides (312, 313) of the door assembly; a rear panel coupled to each of the two opposing sides (312, 313) of the front panel; a door cap (330, 340) configured to cover an upper side or a lower side of the door assembly; and a connection member provided with a first connection unit coupled to the front panel and a second connection unit coupled to the door cap (330, 340); a front panel forming a front side and two opposing sides (312, 313) of the door assembly; a rear panel coupled to each of the two opposing sides (312, 313) of the front panel; a door cap (330, 340) configured to cover an upper side or a lower side of the door assembly; and a connection member provided with a first connection unit coupled to the front panel and a second connection unit coupled to the door cap (330, 340); characterized in that the first connection unit comprises at least one locking unit, and a first groove formed in one side of the connection member, wherein the front panel comprises a first coupling unit extended from an upper end to an inner side of the door assembly, a second coupling unit extended from one side of the first coupling unit to a lower side, and at least one first coupling hole provided in an upper portion or a lower portion of the front panel and in the second coupling unit, and wherein the front panel is coupled to the connection member such that at least one portion of the front panel is placed inside of the first groove and at least one locking unit is arranged to couple to the at least one first coupling hole; and wherein the second connection unit comprises a second groove provided in parallel to the first groove and further towards the inner side of the door assembly than the first groove, and at least one second coupling hole provided in one side of an inside of the second groove, and wherein the door cap (330, 340) comprises at least one door cap coupling member disposed inside of the door cap (330, 340) to be extended to an inner side direction of the door assembly to be coupled to the second coupling hole.