A method for producing a skin-covered polyolefin-based resin foamed molded article, comprising the steps of: extruding a melt comprising a polyolefin-based resin to form a parison in a softened state; blow-molding the parison into a skin defining a hollow interior space; filling multi-layered expanded beads comprising a polyolefin-based resin in the hollow interior space; forming holes for introducing steam into the hollow interior space through steam pins by inserting steam pins through the skin; and heating the multi-layered expanded beads filled in the hollow interior space to fuse-bond the multi-layered expanded beads to each other and to fuse-bond the multi-layered expanded beads to the skin by introducing steam into hollow interior space through the steam pins inserted through the hole, wherein the multi-layered expanded beads fulfill the following requirements (a) to (d) (a) the multi-layered expanded beads have an apparent density of 0.03 to 0.2 g/cm 3; (b) the multi-layered expanded beads have an average diameter of 1.5 to 3.5 mm; (c) the multi-layered expanded beads, when measured by heat-flux differential scanning calorimetry described in this specification in which a sample thereof is heated from 23°C to 220°C at a heating rate of 10°C/min, give a DSC curve which has an endothermic peak A intrinsic to the polyolefin-based resin of the multi-layered expanded beads and at least one endothermic peak B on a high temperature side of the endothermic peak A, and in which a ratio of the heat of fusion of the endothermic peak B to the total heat of fusion of the endothermic peaks is 0.15:1 to 0.25:1 and the endothermic peak B of the multi-layered expanded beads has a heat of fusion of 15 to 24 J/g; and (d) the multi-layered expanded beads have a surface layer having a melting point lower than that of a region inside the surface layer. extruding a melt comprising a polyolefin-based resin to form a parison in a softened state; blow-molding the parison into a skin defining a hollow interior space; filling multi-layered expanded beads comprising a polyolefin-based resin in the hollow interior space; forming holes for introducing steam into the hollow interior space through steam pins by inserting steam pins through the skin; and heating the multi-layered expanded beads filled in the hollow interior space to fuse-bond the multi-layered expanded beads to each other and to fuse-bond the multi-layered expanded beads to the skin by introducing steam into hollow interior space through the steam pins inserted through the hole, wherein the multi-layered expanded beads fulfill the following requirements (a) to (d) (a) the multi-layered expanded beads have an apparent density of 0.03 to 0.2 g/cm 3; (b) the multi-layered expanded beads have an average diameter of 1.5 to 3.5 mm; (c) the multi-layered expanded beads, when measured by heat-flux differential scanning calorimetry described in this specification in which a sample thereof is heated from 23°C to 220°C at a heating rate of 10°C/min, give a DSC curve which has an endothermic peak A intrinsic to the polyolefin-based resin of the multi-layered expanded beads and at least one endothermic peak B on a high temperature side of the endothermic peak A, and in which a ratio of the heat of fusion of the endothermic peak B to the total heat of fusion of the endothermic peaks is 0.15:1 to 0.25:1 and the endothermic peak B of the multi-layered expanded beads has a heat of fusion of 15 to 24 J/g; and (d) the multi-layered expanded beads have a surface layer having a melting point lower than that of a region inside the surface layer. (a) the multi-layered expanded beads have an apparent density of 0.03 to 0.2 g/cm 3; (b) the multi-layered expanded beads have an average diameter of 1.5 to 3.5 mm; (c) the multi-layered expanded beads, when measured by heat-flux differential scanning calorimetry described in this specification in which a sample thereof is heated from 23°C to 220°C at a heating rate of 10°C/min, give a DSC curve which has an endothermic peak A intrinsic to the polyolefin-based resin of the multi-layered expanded beads and at least one endothermic peak B on a high temperature side of the endothermic peak A, and in which a ratio of the heat of fusion of the endothermic peak B to the total heat of fusion of the endothermic peaks is 0.15:1 to 0.25:1 and the endothermic peak B of the multi-layered expanded beads has a heat of fusion of 15 to 24 J/g; and (d) the multi-layered expanded beads have a surface layer having a melting point lower than that of a region inside the surface layer.