A culture material comprising a 4-methyl-1-pentene polymer (X) for cells, tissues, or organs, the culture material having an oxygen permeation rate at a temperature of 23°C and a humidity of 0% of 4500 to 90000 cm 3 /(m 2 × 24h × atm), wherein the culture material is characterized in that is has: a water contact angle at a culture surface of 50° to 100°, and a sagging distance by a test method (A) described below of 0 to 5 mm, wherein the 4-methyl-1-pentene polymer (X) is a copolymer (x2) of 4-methyl-1-pentene and at least one type of olefin selected from ethylene and an α-olefin having 3 to 20 carbon atoms (excluding 4-methyl-1-pentene), wherein the content of a structural unit derived from 4-methyl-1-pentene is 60 to 98 mol%, and the content of a structural unit derived from at least one type of olefin selected from ethylene and an α-olefin having 3 to 20 carbon atoms (excluding 4-methyl-1-pentene) is 2 to 40 mol%, with all repeating structural units being 100 mol%, wherein the culture material is subjected to a hydrophilic treatment on its surface, and wherein the hydrophilic treatment is at least one treatment selected from an ultraviolet treatment, a corona treatment, a plasma treatment, and an ozone treatment, wherein in the test method (A), a test piece having the same material as the culture material and the same thickness as the culture material having the culture surface and having a flat plate shape of 100 mm long and 10 mm wide is made, the test piece is fixed onto a test board in a state where the test piece protrudes lengthwise a length of 50 mm in a horizontal direction from a top surface of the test board, the top surface being horizontal, and three minutes after fixing, a measurement is performed of a distance of how much an end of the test piece protruding from the test board sags in a vertically downward direction from a horizontal plane including the top surface of the test board, provided that the fixing to the measurement is performed at room temperature. a water contact angle at a culture surface of 50° to 100°, and a sagging distance by a test method (A) described below of 0 to 5 mm, wherein the 4-methyl-1-pentene polymer (X) is a copolymer (x2) of 4-methyl-1-pentene and at least one type of olefin selected from ethylene and an α-olefin having 3 to 20 carbon atoms (excluding 4-methyl-1-pentene), wherein the content of a structural unit derived from 4-methyl-1-pentene is 60 to 98 mol%, and the content of a structural unit derived from at least one type of olefin selected from ethylene and an α-olefin having 3 to 20 carbon atoms (excluding 4-methyl-1-pentene) is 2 to 40 mol%, with all repeating structural units being 100 mol%, wherein the culture material is subjected to a hydrophilic treatment on its surface, and wherein the hydrophilic treatment is at least one treatment selected from an ultraviolet treatment, a corona treatment, a plasma treatment, and an ozone treatment, wherein in the test method (A), a test piece having the same material as the culture material and the same thickness as the culture material having the culture surface and having a flat plate shape of 100 mm long and 10 mm wide is made, the test piece is fixed onto a test board in a state where the test piece protrudes lengthwise a length of 50 mm in a horizontal direction from a top surface of the test board, the top surface being horizontal, and three minutes after fixing, a measurement is performed of a distance of how much an end of the test piece protruding from the test board sags in a vertically downward direction from a horizontal plane including the top surface of the test board, provided that the fixing to the measurement is performed at room temperature. <EOS>