A heat exchanger, comprising: at least one refrigerant tube configured for a refrigerant to flow therein, the at least one refrigerant tube having a plurality of tube channels; a plurality of headers (20, 30) provided at both sides of the at least one refrigerant tube, respectively; and one or more distributor (100, 200) provided between one header among the plurality of headers (20, 30) and the at least one refrigerant tube, wherein the one or more distributor (100, 200) includes: an opening being formed at a first side (111, 211) of the distributor (100, 200) and through which the refrigerant tube is coupled to the distributor (100, 200); and a shielding wall having an inlet/outlet (116, 216) on a second side (112, 212) of the distributor (100, 200), wherein the inlet/outlet (116, 216) is configured to guide introduction or discharge of the refrigerant, wherein the one or more distributor (100,200) includes at least one first distributor coupled to a first header among the plurality of headers (20,30); and at least one second distributor coupled to a second header among the plurality of headers (20, 30); wherein the at least one first distributor includes at least one first upper distributor connected to an upper portion of the first header, and at least one first lower distributor connected to a lower portion of the first header; and wherein the at least one second distributor includes at least one second upper distributor connected to an upper portion of the second header and at least one second lower distributor connected to a lower portion of the second header; characterized in that: a direction in which the at least one first and second upper distributors (100a, 200a) are respectively coupled to the first and second headers (20, 30) are formed to be opposite to a direction in which the at least one first and second lower distributors (100b, 200b) are respectively coupled to the first and second headers (20, 30). at least one refrigerant tube configured for a refrigerant to flow therein, the at least one refrigerant tube having a plurality of tube channels; a plurality of headers (20, 30) provided at both sides of the at least one refrigerant tube, respectively; and one or more distributor (100, 200) provided between one header among the plurality of headers (20, 30) and the at least one refrigerant tube, wherein the one or more distributor (100, 200) includes: an opening being formed at a first side (111, 211) of the distributor (100, 200) and through which the refrigerant tube is coupled to the distributor (100, 200); and a shielding wall having an inlet/outlet (116, 216) on a second side (112, 212) of the distributor (100, 200), wherein the inlet/outlet (116, 216) is configured to guide introduction or discharge of the refrigerant, wherein the one or more distributor (100,200) includes at least one first distributor coupled to a first header among the plurality of headers (20,30); and at least one second distributor coupled to a second header among the plurality of headers (20, 30); wherein the at least one first distributor includes at least one first upper distributor connected to an upper portion of the first header, and at least one first lower distributor connected to a lower portion of the first header; and wherein the at least one second distributor includes at least one second upper distributor connected to an upper portion of the second header and at least one second lower distributor connected to a lower portion of the second header; characterized in that: a direction in which the at least one first and second upper distributors (100a, 200a) are respectively coupled to the first and second headers (20, 30) are formed to be opposite to a direction in which the at least one first and second lower distributors (100b, 200b) are respectively coupled to the first and second headers (20, 30). an opening being formed at a first side (111, 211) of the distributor (100, 200) and through which the refrigerant tube is coupled to the distributor (100, 200); and a shielding wall having an inlet/outlet (116, 216) on a second side (112, 212) of the distributor (100, 200), wherein the inlet/outlet (116, 216) is configured to guide introduction or discharge of the refrigerant, wherein the one or more distributor (100,200) includes at least one first distributor coupled to a first header among the plurality of headers (20,30); and at least one second distributor coupled to a second header among the plurality of headers (20, 30); wherein the at least one first distributor includes at least one first upper distributor connected to an upper portion of the first header, and at least one first lower distributor connected to a lower portion of the first header; and wherein the at least one second distributor includes at least one second upper distributor connected to an upper portion of the second header and at least one second lower distributor connected to a lower portion of the second header; characterized in that: a direction in which the at least one first and second upper distributors (100a, 200a) are respectively coupled to the first and second headers (20, 30) are formed to be opposite to a direction in which the at least one first and second lower distributors (100b, 200b) are respectively coupled to the first and second headers (20, 30).