A method for producing a laminate, comprising extrusion laminating a resin composition comprising an ethylene-based polymer composition comprising an ethylene-based polymer and a phosphorus-containing compound represented by the following formula and/or a phosphorus-containing compound represented by the following formula with a base material so that the resin composition and the base material directly contact each other, wherein the ethylene-based polymer comprises at least one of a high-pressure processed low-density polyethylene and a copolymer of ethylene with an α-olefin having 3 to 10 carbon atoms; and the ethylene-based polymer composition satisfies the following requirements to; wherein the resin composition and the base material are extrusion laminated at a speed of 150 to 1,000 m/min; and wherein a temperature of the resin composition when being extrusion laminated is 310 to 350°C: wherein R1 to R3 are each independently an alkyl group having 1 to 30 carbon atoms, an isoalkyl group having 3 to 30 carbon atoms, an alkenyl group having 3 to 18 carbon atoms, a cycloalkyl group having 5 to 12 carbon atoms or an aryl group; or an alkyl group having 1 to 18 carbon atoms substituted with an aryl group, a halogen atom, -COOR4, -CN, -NR5R6 or -CONR7R8; or an alkoxy group having 1 to 30 carbon atoms, an isoalkyloxy group having 3 to 30 carbon atoms, an alkenyloxy group having 3 to 18 carbon atoms or a cycloalkyloxy group having 5 to 12 carbon atoms; or an alkoxy group having 1 to 18 carbon atoms substituted with an aryl group, a halogen atom, -COOR9, -CN, -NR10R11 or -CONR12R13, or a group represented by the following formula: or, an alkylthio group having 1 to 30 carbon atoms, an isoalkylthio group having 3 to 30 carbon atoms, an alkenylthio group having 3 to 18 carbon atoms or a cycloalkylthio group having 5 to 12 carbon atoms; or an alkylthio group having 1 to 18 carbon atoms substituted with an aryl group, a halogen atom, -COOR16, -CN, -NR17R18 or -CONR19R20, or a group represented by the following formula: wherein R4 to R13, R15 to R20 and R22 are each independently a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, an isoalkyl group having 3 to 30 carbon atoms, an alkenyl group having 3 to 18 carbon atoms, a cycloalkyl group having 5 to 12 carbon atoms or an aryl group; R14 and R21 are each an alkyl group having 1 to 30 carbon atoms, an isoalkyl group having 3 to 30 carbon atoms, an alkenyl group having 3 to 18 carbon atoms, a cycloalkyl group having 5 to 12 carbon atoms or an aryl group; and at least two of R1 to R3 may be bonded with each other: wherein R23 and R24 are synonymous with R1 to R3 in the above formula, and a melt flow rate of the ethylene-based polymer composition at 190°C at a load of 2.16 kg is 4 to 50 g/10 min; a density thereof is 875 to 940 kg/m 3; a content of a compound having a phenol group therein is lower than 0.05% by mass; and a melt tension thereof at 190°C is 10 mN or higher. wherein the resin composition and the base material are extrusion laminated at a speed of 150 to 1,000 m/min; and wherein a temperature of the resin composition when being extrusion laminated is 310 to 350°C. a melt flow rate of the ethylene-based polymer composition at 190°C at a load of 2.16 kg is 4 to 50 g/10 min; a density thereof is 875 to 940 kg/m 3; a content of a compound having a phenol group therein is lower than 0.05% by mass; and a melt tension thereof at 190°C is 10 mN or higher.