A cold-rolled steel sheet having a chemical composition consisting of, in terms of mass%: C: 0.1% to 0.3%; Si: 0.01% to 2.0%; Mn: 1.5% to 2.5%; P: 0.001 % to 0.06%; S: 0.001% to 0.01%; N: 0.0005% to 0.01%; Al: 0.01% to 0.05%; and optionally one or more elements selected from: B: 0.0005% to 0.002%; Mo: 0.01% to 0.5%; Cr: 0.01% to 0.5%; V: 0.001% to 0.1%; Ti: 0.001 % to 0.1 %; Nb: 0.001% to 0.05%; Ni: 0.01% to 1.0%; Cu: 0.01% to 1.0%; Ca: 0.0005% to 0.005%; REM: 0.0005% to 0.005%; and rest Fe and impurities, wherein a structure before and after a hot-stamping includes a ferrite: 30 area% to 90 area%, a martensite: 0 area% or more and less than 20 area%, a pearlite: 0 area% to 10 area%, a retained austenite: 5 volume% to 20 volume%, and a rest structure: a bainite, a hardness of the retained austenite measured with a nano indenter before and after the hot-stamping satisfies Expression 1 and Expression 2, a tensile strength and a ductility satisfy a relation of TS×El≥20000MPa·%, H 2 / H 1 < 1.1 σHM < 20 and the "H1" represents the hardness of the retained austenite existing within a thickness surface portion before and after the hot-stamping, the thickness surface portion being an area within 200 μm in the thickness direction of a surface of the cold-rolled steel sheet, the "H2" represents the hardness of the retained austenite existing within a thickness center portion before and after the hot-stamping, the thickness center portion being an area within ± 100μm along the thickness direction of a center plane of the cold-rolled steel sheet in the thickness direction, the "σHM" represents a variance of the hardness of the retained austenite within the thickness center portion before or after the hot-stamping, "TS" represents the tensile strength of the cold-rolled steel sheet in terms of MPa, and "E1" represents the ductility of the cold-rolled steel sheet in terms of %. C: 0.1% to 0.3%; Si: 0.01% to 2.0%; Mn: 1.5% to 2.5%; P: 0.001 % to 0.06%; S: 0.001% to 0.01%; N: 0.0005% to 0.01%; Al: 0.01% to 0.05%; and optionally one or more elements selected from: B: 0.0005% to 0.002%; Mo: 0.01% to 0.5%; Cr: 0.01% to 0.5%; V: 0.001% to 0.1%; Ti: 0.001 % to 0.1 %; Nb: 0.001% to 0.05%; Ni: 0.01% to 1.0%; Cu: 0.01% to 1.0%; Ca: 0.0005% to 0.005%; REM: 0.0005% to 0.005%; and rest Fe and impurities, wherein a structure before and after a hot-stamping includes a ferrite: 30 area% to 90 area%, a martensite: 0 area% or more and less than 20 area%, a pearlite: 0 area% to 10 area%, a retained austenite: 5 volume% to 20 volume%, and a rest structure: a bainite, a hardness of the retained austenite measured with a nano indenter before and after the hot-stamping satisfies Expression 1 and Expression 2, a tensile strength and a ductility satisfy a relation of TS×El≥20000MPa·%, H 2 / H 1 < 1.1 σHM < 20 and the "H1" represents the hardness of the retained austenite existing within a thickness surface portion before and after the hot-stamping, the thickness surface portion being an area within 200 μm in the thickness direction of a surface of the cold-rolled steel sheet, the "H2" represents the hardness of the retained austenite existing within a thickness center portion before and after the hot-stamping, the thickness center portion being an area within ± 100μm along the thickness direction of a center plane of the cold-rolled steel sheet in the thickness direction, the "σHM" represents a variance of the hardness of the retained austenite within the thickness center portion before or after the hot-stamping, "TS" represents the tensile strength of the cold-rolled steel sheet in terms of MPa, and "E1" represents the ductility of the cold-rolled steel sheet in terms of %.