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 any one or more of the following to, a balance of Fe, and unavoidable impurities; and as microstructures, ferrite which is a soft structure, and tempered martensite, bainite, and retained austenite which are hard structures, wherein the high strength steel sheet satisfies the following [Relational Expression 1] and [Relational Expression 2] wherein the microstructure and the hardness are measured with the respective methods disclosed in the description, wherein the microstructure of the steel sheet includes 30 to 70 vol% of tempered martensite, 10 to 45 vol% of bainite, 10 to 40 vol% of retained austenite, and 3 to 20 vol% of ferrite, and wherein a balance B T·E of tensile strength and elongation expressed by the following [Relational Expression 3] is 22,000 in MPa%, or more, a balance B T·H of tensile strength and hole expansion ratio expressed by the following [Relational Expression 4] is 7*10 6 in Mpa 2 % 1/2, or more, and bending formability B R expressed by the following [Relational Expression 5] is 0.5 to 3.0. 0.4 ≤ H F / H TM + B + γ ≤ 0.9 where F and TM+B+γ are nanohardness values measured using a nanoindenter, 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% T γ / V γ ≥ 0.1 where T(y) is a fraction (vol%) of the tempered retained austenite of the steel sheet, and V(y) is a fraction in vol%, of the retained austenite of the steel sheet. 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 means a minimum bending radius in mm, at which cracks do not occur after a 90° bending test, and t means a thickness in mm, of the steel sheet, wherein the microstructure and the hardness are measured with the respective methods disclosed in the description. 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 any one or more of the following to, a balance of Fe, and unavoidable impurities; and as microstructures, ferrite which is a soft structure, and tempered martensite, bainite, and retained austenite which are hard structures, wherein the high strength steel sheet satisfies the following [Relational Expression 1] and [Relational Expression 2] wherein the microstructure and the hardness are measured with the respective methods disclosed in the description, wherein the microstructure of the steel sheet includes 30 to 70 vol% of tempered martensite, 10 to 45 vol% of bainite, 10 to 40 vol% of retained austenite, and 3 to 20 vol% of ferrite, and wherein a balance B T·E of tensile strength and elongation expressed by the following [Relational Expression 3] is 22,000 in MPa%, or more, a balance B T·H of tensile strength and hole expansion ratio expressed by the following [Relational Expression 4] is 7*10 6 in Mpa 2 % 1/2, or more, and bending formability B R expressed by the following [Relational Expression 5] is 0.5 to 3.0. 0.4 ≤ H F / H TM + B + γ ≤ 0.9 where F and TM+B+γ are nanohardness values measured using a nanoindenter, 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% T γ / V γ ≥ 0.1 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% T γ / V γ ≥ 0.1 where T(y) is a fraction (vol%) of the tempered retained austenite of the steel sheet, and V(y) is a fraction in vol%, of the retained austenite of the steel sheet. 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 means a minimum bending radius in mm, at which cracks do not occur after a 90° bending test, and t means a thickness in mm, of the steel sheet, wherein the microstructure and the hardness are measured with the respective methods disclosed in the description.