A method for producing a high-strength steel strip with a TRIP/TWIP effect comprising the steps of: - melting of a steel melt containing (in wt.%): C: 0.1 to < 0.3; Mn: 4 to <8; Al: >1 to 2.9; P: < 0.05; S: < 0.05; N: < 0.02; balance iron including unavoidable steel-accompanying elements, with optional alloying of one or more of the following elements (in wt.%): Si: 0.05 to 0.7; Cr: 0.1 to 3; Mo: 0.01 to 0.9; Ti: 0.005 to 0.3; B: 0.0005 to 0.01 in a blast furnace or electric arc furnace process with optional vacuum treatment of the melt; - casting the molten steel to form a pre- strip by means of a near-net-shape horizontal or vertical strip casting method or casting the steel melt to form a slab or thin slab by means of a horizontal or vertical slab or thin slab casting process, - heating to a rolling temperature of 1050 to 1250°C or inline rolling from the casting heat, - hot rolling of the pre-strip or slab or thin slab into a hot strip with a thickness of 12 to 0.8 mm, with a final rolling temperature of 1050 to 800°C, - coiling the hot strip at a temperature of more than 200 to 800°C, - pickling the hot strip, - annealing of the hot strip in a continuous or discontinuous annealing system with an annealing time of 1 min to 48 h and temperatures of 540 to 840°C, - cold rolling of the hot strip at room temperature or at an elevated temperature in one or more rolling passes, - annealing of the steel strip after cold rolling at room temperature or elevated temperature in a continuous annealing system with an annealing time of 1 to 15 min and temperatures of 720°C to 840°C or by means of a discontinuous annealing system with an annealing time of 30 min to 48 h and temperatures of 550°C to 820°C, - optional electrolytic galvanizing or hot galvanizing of the steel strip or application of another organic or inorganic coating. - melting of a steel melt containing (in wt.%): C: 0.1 to < 0.3; Mn: 4 to <8; Al: >1 to 2.9; P: < 0.05; S: < 0.05; N: < 0.02; balance iron including unavoidable steel-accompanying elements, with optional alloying of one or more of the following elements (in wt.%): Si: 0.05 to 0.7; Cr: 0.1 to 3; Mo: 0.01 to 0.9; Ti: 0.005 to 0.3; B: 0.0005 to 0.01 in a blast furnace or electric arc furnace process with optional vacuum treatment of the melt; - casting the molten steel to form a pre- strip by means of a near-net-shape horizontal or vertical strip casting method or casting the steel melt to form a slab or thin slab by means of a horizontal or vertical slab or thin slab casting process, - heating to a rolling temperature of 1050 to 1250°C or inline rolling from the casting heat, - hot rolling of the pre-strip or slab or thin slab into a hot strip with a thickness of 12 to 0.8 mm, with a final rolling temperature of 1050 to 800°C, - coiling the hot strip at a temperature of more than 200 to 800°C, - pickling the hot strip, - annealing of the hot strip in a continuous or discontinuous annealing system with an annealing time of 1 min to 48 h and temperatures of 540 to 840°C, - cold rolling of the hot strip at room temperature or at an elevated temperature in one or more rolling passes, - annealing of the steel strip after cold rolling at room temperature or elevated temperature in a continuous annealing system with an annealing time of 1 to 15 min and temperatures of 720°C to 840°C or by means of a discontinuous annealing system with an annealing time of 30 min to 48 h and temperatures of 550°C to 820°C, - optional electrolytic galvanizing or hot galvanizing of the steel strip or application of another organic or inorganic coating.