A heterophasic propylene polymerization material, comprising a component (I-1) or, and a component, the heterophasic propylene polymerization material satisfying features (i) to (v): (i) the heterophasic propylene polymerization material comprises a xylene-soluble content by 20 wt% or more, provided that a total weight of the heterophasic propylene polymerization material is 100 wt%; (ii) xylene-soluble content in the heterophasic propylene polymerization material has a limiting viscosity [n] CXS not less than 5 dL/g; (iii) a melt flow rate of the component (I-1) or (I-2) is 70 g/10 min or more, where the melt flow rate is measured at 230°C under load of 2.16 kgf; (iv) a melt flow rate of the heterophasic propylene polymerization material is 5 g/10 min or more, where the melt flow rate is measured at 230°C under load of 2.16 kgf; and (v) the number of gels of 100 μm or more in diameter on a sheet for counting gels is 1000 or less per 100 cm 2 of the sheet, where the sheet is prepared by mixing 0.05 parts by weight of a neutralizer and 0.2 parts by weight of an anti-oxidant with 100 parts by weight of the heterophasic propylene polymerization material, so as to obtain a mixture, pelletizing the mixture by melt-extrusion at a setting temperature of 280°C and an extrusion rate of 10 kg/hr by using a 40 mm granulator equipped with a screen pack of 100 mesh, so as to obtain pellets, melt-extruding the pellets thus obtained at a resin temperature of 230°C into a sheet shape by using a single-screwed extruder with a screw diameter of 20 mm, so as to obtain a sheet-shaped product thus melt-extruded, and cooling the sheet shaped product on a cooling roll through which cooling water of 30°C is passed, so as to obtain the sheet of 50 μm in thickness, the component (I-1) being a propylene homopolymer, the component (I-2) being a propylene copolymer component comprising a monomer unit derived from propylene, and a monomer unit derived from at least one olefin selected from the group consisting of ethylene and α-olefins having 4 to 12 carbon atoms, the component comprising the monomer unit derived from at least one olefin selected from the group consisting of ethylene and α-olefins having 4 to 12 carbon atoms, by an amount not less than 0.01 wt% but less than 20 wt%, where a total weight of the component is 100 wt%, and the component being an ethylene-α-olefin copolymer component comprising a monomer unit derived from ethylene and a monomer unit derived from at least one olefin selected from the group consisting of propylene and α-olefins having 4 to 12 carbon atoms, the component comprising the monomer unit derived from ethylene by not less than 20 wt% but not more than 80 wt%, provided that a total weight of the component is 100 wt%. (i) the heterophasic propylene polymerization material comprises a xylene-soluble content by 20 wt% or more, provided that a total weight of the heterophasic propylene polymerization material is 100 wt%; (ii) xylene-soluble content in the heterophasic propylene polymerization material has a limiting viscosity [n] CXS not less than 5 dL/g; (iii) a melt flow rate of the component (I-1) or (I-2) is 70 g/10 min or more, where the melt flow rate is measured at 230°C under load of 2.16 kgf; (iv) a melt flow rate of the heterophasic propylene polymerization material is 5 g/10 min or more, where the melt flow rate is measured at 230°C under load of 2.16 kgf; and (v) the number of gels of 100 μm or more in diameter on a sheet for counting gels is 1000 or less per 100 cm 2 of the sheet, where the sheet is prepared by mixing 0.05 parts by weight of a neutralizer and 0.2 parts by weight of an anti-oxidant with 100 parts by weight of the heterophasic propylene polymerization material, so as to obtain a mixture, pelletizing the mixture by melt-extrusion at a setting temperature of 280°C and an extrusion rate of 10 kg/hr by using a 40 mm granulator equipped with a screen pack of 100 mesh, so as to obtain pellets, melt-extruding the pellets thus obtained at a resin temperature of 230°C into a sheet shape by using a single-screwed extruder with a screw diameter of 20 mm, so as to obtain a sheet-shaped product thus melt-extruded, and cooling the sheet shaped product on a cooling roll through which cooling water of 30°C is passed, so as to obtain the sheet of 50 μm in thickness, the component (I-1) being a propylene homopolymer, the component (I-2) being a propylene copolymer component comprising a monomer unit derived from propylene, and a monomer unit derived from at least one olefin selected from the group consisting of ethylene and α-olefins having 4 to 12 carbon atoms, the component comprising the monomer unit derived from at least one olefin selected from the group consisting of ethylene and α-olefins having 4 to 12 carbon atoms, by an amount not less than 0.01 wt% but less than 20 wt%, where a total weight of the component is 100 wt%, and the component being an ethylene-α-olefin copolymer component comprising a monomer unit derived from ethylene and a monomer unit derived from at least one olefin selected from the group consisting of propylene and α-olefins having 4 to 12 carbon atoms, the component comprising the monomer unit derived from ethylene by not less than 20 wt% but not more than 80 wt%, provided that a total weight of the component is 100 wt%.