A high-strength steel sheet having superior workability, comprising: by wt%, C: 0.25 to 0.75%, Si: 4.0% or less, Mn: 0.9 to 5.0%, Al: 5.0% or less, P: 0.15% or less, S: 0.03% or less, N: 0.03% or less, optionally one or more of the following to, a balance of Fe, and unavoidable impurities; and as microstructures that are determined as defined in the description, ferrite is a soft structure, and tempered martensite, bainite, and retained austenite which are hard structures, by volume fraction, the soft structure is 3 to 20% and the hard structures is 40 % or more, wherein the high-strength steel sheet satisfies the following [Relational Expression 1] 0.4 ≤ H F / H TM + B + γ ≤ 0.9 in the above Relational Expression 1, F and TM+B+γ are nanohardness values measured using a nanoindenter as defined in the description, F is an average nanohardness value Hv of the ferrite which is the soft structure, TM+B+γ is the average nanohardness value Hv of the tempered martensite, the bainite, and the retained austenite which are the hard structures. one or more of Ti: 0 to 0.5%, Nb: 0 to 0.5%, and V: 0 to 0.5%; one or more of Cr: 0 to 3.0% and Mo: 0 to 3.0%; one or more of Cu: 0 to 4.5% and Ni: 0 to 4.5%; B: 0 to 0.005%; one or more of Ca: 0 to 0.05%, REM: 0 to 0.05% excluding Y, and Mg: 0 to 0.05%; one or more of W: 0 to 0.5% and Zr: 0 to 0.5%; one or more of Sb: 0 to 0.5% and Sn: 0 to 0.5%; one or more of Y: 0 to 0.2% and Hf: 0 to 0.2%; and Co: 0 to 1.5%, wherein a balance B T•E of tensile strength and elongation expressed by the following [Relational Expression 2] is 22,000 MPa% or more, a balance B T•H of tensile strength and a hole expansion ratio expressed by the following [Relational Expression 3] is 7*10 6 in MPa 2 % 1/2 or more, and bendability BR expressed by the following [Relational Expression 4] is 0.5 to 3.0, B T · E = Tensile Strength TS, MPa * Elongation El, % B T · H = Tensile Strength TS, MPa 2 * Hole Expansion Ratio HER, % 1 / 2 B R = R / t where R is a minimum bending radius in mm at which cracks do not occur after a 90° bending test, and t is a thickness in mm of the steel sheet. by wt%, C: 0.25 to 0.75%, Si: 4.0% or less, Mn: 0.9 to 5.0%, Al: 5.0% or less, P: 0.15% or less, S: 0.03% or less, N: 0.03% or less, optionally one or more of the following to, a balance of Fe, and unavoidable impurities; and as microstructures that are determined as defined in the description, ferrite is a soft structure, and tempered martensite, bainite, and retained austenite which are hard structures, by volume fraction, the soft structure is 3 to 20% and the hard structures is 40 % or more, wherein the high-strength steel sheet satisfies the following [Relational Expression 1] 0.4 ≤ H F / H TM + B + γ ≤ 0.9 in the above Relational Expression 1, F and TM+B+γ are nanohardness values measured using a nanoindenter as defined in the description, F is an average nanohardness value Hv of the ferrite which is the soft structure, TM+B+γ is the average nanohardness value Hv of the tempered martensite, the bainite, and the retained austenite which are the hard structures. one or more of Ti: 0 to 0.5%, Nb: 0 to 0.5%, and V: 0 to 0.5%; one or more of Cr: 0 to 3.0% and Mo: 0 to 3.0%; one or more of Cu: 0 to 4.5% and Ni: 0 to 4.5%; B: 0 to 0.005%; one or more of Ca: 0 to 0.05%, REM: 0 to 0.05% excluding Y, and Mg: 0 to 0.05%; one or more of W: 0 to 0.5% and Zr: 0 to 0.5%; one or more of Sb: 0 to 0.5% and Sn: 0 to 0.5%; one or more of Y: 0 to 0.2% and Hf: 0 to 0.2%; and Co: 0 to 1.5%, one or more of Ti: 0 to 0.5%, Nb: 0 to 0.5%, and V: 0 to 0.5%; one or more of Cr: 0 to 3.0% and Mo: 0 to 3.0%; one or more of Cu: 0 to 4.5% and Ni: 0 to 4.5%; B: 0 to 0.005%; one or more of Ca: 0 to 0.05%, REM: 0 to 0.05% excluding Y, and Mg: 0 to 0.05%; one or more of W: 0 to 0.5% and Zr: 0 to 0.5%; one or more of Sb: 0 to 0.5% and Sn: 0 to 0.5%; one or more of Y: 0 to 0.2% and Hf: 0 to 0.2%; and Co: 0 to 1.5%, wherein a balance B T•E of tensile strength and elongation expressed by the following [Relational Expression 2] is 22,000 MPa% or more, a balance B T•H of tensile strength and a hole expansion ratio expressed by the following [Relational Expression 3] is 7*10 6 in MPa 2 % 1/2 or more, and bendability BR expressed by the following [Relational Expression 4] is 0.5 to 3.0, B T · E = Tensile Strength TS, MPa * Elongation El, % B T · H = Tensile Strength TS, MPa 2 * Hole Expansion Ratio HER, % 1 / 2 B R = R / t where R is a minimum bending radius in mm at which cracks do not occur after a 90° bending test, and t is a thickness in mm of the steel sheet.