NOVELTY - Chromium-nickel stainless steel material with a thickness of 0.7-0.9 mm is rolled using a 14-roller precision cold-rolling mill to obtain a semi-finished stainless steel belt. The semi-finished product is annealed in a continuous hydrogen spraying type bright annealing furnace at 1050-1110 degrees C and cleaned. The product is rolled 7 times to a thickness of 0.06-0.08 mm. The semi-finished product is annealed at 1050-1120 degrees C, rolled 6 times to a thickness of 0.03 mm, annealed at 1050-1120 degrees C, straightened, and cut to obtain a flexible thin-film solar battery.    USE - Production of flexible thin-film solar cell with stainless steel band (claimed).    ADVANTAGE - The method enables production of lightweight flexible thin-film solar cell which has excellent shock resistance, deformation resistance, and bending property, and can be installed easily.    DETAILED DESCRIPTION - Chromium-nickel (06Cr19Ni10) stainless steel material with a thickness of 0.7-0.9 mm is rolled 10 times using a 14-roller precision cold-rolling mill at a force of 150-350 KN, a tension of 5-55 KN, and speed of 80-100 m/minute to obtain a semi-finished stainless steel belt with a thickness of 0.15-0.2 mm and a thickness tolerance of -0.008 mm. The semi-finished product is passed at 9-14 m/minute to a continuous hydrogen spraying type bright annealing furnace at 1050-1110 degrees C using hydrogen as protective gas. The product is passed at 60-90 m/minute through a continuous degreasing cleaning machine at 60-80 degrees C which uses water as cleaning agent with a concentration of 2-3%. The product is rolled 7 times using a 14-roller precision cold-rolling mill at a force of 100-300 KN, tension of 5-50 KN, and speed of 60-90 m/minute to obtain a semi-finished product with a thickness of 0.06-0.08 mm and a thickness tolerance of -0.005 mm. The semi-finished product is passed through the furnace at 10-15 m/minute and annealed at 1050-1120 degrees C. The product is then rolled 6 times using a 14-roller precision cold-rolling mill at a force of 50-200 KN, a tension of 5-30 KN, and speed of 60-90 m/minute to obtain a semi-finished product with a thickness of 0.03 mm and a thickness tolerance of -0.003 mm. The semi-finished product is passed through the furnace at 10-17 m/minute and annealed at 1050-1120 degrees C. The product is then straightened using a 20-roll precision stretching-bending straightening machine to obtain a stainless steel band with an unevenness of less than 0.3 mm/2 m and cut to obtain a flexible thin-film solar battery.