A phosphor-containing sheet, wherein a resin main component of the phosphor-containing sheet is a crosslinked hydrosilylation product characterized by including at least the following compositions to; organopolysiloxane represented by an average unit formula: (R 1 2 SiO 2/2) a (R 1 SiO 3/2) b (R 2 O 1/2) c in which R 1 is a phenyl group, an alkyl group or a cycloalkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, provided that 65 to 75 mol % of R 1 is phenyl and 10 to 20 mol % of R 1 is an alkenyl group, R 2 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and a, b and c satisfy the relationship of 0.5 ≤ a ≤ 0.6. 0.4 ≤ b ≤ 0.5, 0 ≤ c ≤ 0.1 and a + b = 1; organopolysiloxane (5 to 15 parts by weight with respect to 100 parts by weight of the component) represented by the general formula: R 3 3 SiO(R 3 2 SiO) m SiR 3 3 in which R 3 is a phenyl group, an alkyl group or a cycloalkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, provided that 40 to 70 mol % of R 3 is phenyl and at least one of R 3 s is an alkenyl group, and m is an integer of 5 to 50; organotrisiloxane (such an amount that a molar ratio of a hydrogen atom coupled with a silicon atom in this component to the total of the alkenyl group in the component and the component is 0.5 to 2) represented by the general formula: (HR 4 2 SiO) 2 SiR 4 2 in which R 4 is a phenyl group, or an alkyl group or a cycloalkyl group having 1 to 6 carbon atoms, provided that 30 to 70 mol % of R 4 is phenyl; and wherein the alkenyl groups in the component and the component with the hydrogen atom are coupled with a silicon atom in the component, the phosphor-containing sheet having a storage modulus of 0.1 MPa or more at 25°C and a storage modulus of less than 0.1 MPa at 100°C organopolysiloxane represented by an average unit formula: (R 1 2 SiO 2/2) a (R 1 SiO 3/2) b (R 2 O 1/2) c in which R 1 is a phenyl group, an alkyl group or a cycloalkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, provided that 65 to 75 mol % of R 1 is phenyl and 10 to 20 mol % of R 1 is an alkenyl group, R 2 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and a, b and c satisfy the relationship of 0.5 ≤ a ≤ 0.6. 0.4 ≤ b ≤ 0.5, 0 ≤ c ≤ 0.1 and a + b = 1; organopolysiloxane (5 to 15 parts by weight with respect to 100 parts by weight of the component) represented by the general formula: R 3 3 SiO(R 3 2 SiO) m SiR 3 3 in which R 3 is a phenyl group, an alkyl group or a cycloalkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, provided that 40 to 70 mol % of R 3 is phenyl and at least one of R 3 s is an alkenyl group, and m is an integer of 5 to 50; organotrisiloxane (such an amount that a molar ratio of a hydrogen atom coupled with a silicon atom in this component to the total of the alkenyl group in the component and the component is 0.5 to 2) represented by the general formula: (HR 4 2 SiO) 2 SiR 4 2 in which R 4 is a phenyl group, or an alkyl group or a cycloalkyl group having 1 to 6 carbon atoms, provided that 30 to 70 mol % of R 4 is phenyl; and wherein the alkenyl groups in the component and the component with the hydrogen atom are coupled with a silicon atom in the component, the phosphor-containing sheet having a storage modulus of 0.1 MPa or more at 25°C and a storage modulus of less than 0.1 MPa at 100°C in which R 4 is a phenyl group, or an alkyl group or a cycloalkyl group having 1 to 6 carbon atoms, provided that 30 to 70 mol % of R 4 is phenyl; and wherein the alkenyl groups in the component and the component with the hydrogen atom are coupled with a silicon atom in the component, the phosphor-containing sheet having a storage modulus of 0.1 MPa or more at 25°C and a storage modulus of less than 0.1 MPa at 100°C