A method for producing an aromatic polycarbonate resin composition, comprising the steps of: separately preparing a solution by dissolving an aromatic polycarbonate resin-A having a viscosity-average molecular weight of 3,000-25,000 in a solvent and preparing an another solution by dissolving an aromatic polycarbonate resin-B having a viscosity-average molecular weight of 50,000-90,000 in a solvent; mixing both solutions to prepare a resin solution having the aromatic polycarbonate resin-A and the aromatic polycarbonate resin-B dissolved in the solvent; and removing the solvent from the resulting resin solution, wherein the solvent used for dissolving the aromatic polycarbonate resin-A and the aromatic polycarbonate resin-B is methylene chloride, wherein said aromatic polycarbonate resin composition comprises an alkali metal salt of an organic sulfonic acid and the content of the alkali metal salt of the organic sulfonic acid is 0.005-0.1% by mass relative to the total mass (100% by mass) of the aromatic polycarbonate resin-A and the aromatic polycarbonate resin-B, wherein the aromatic polycarbonate resin-A is contained in an amount of 99-50% by mass and the aromatic polycarbonate resin-B is contained in an amount of 1-50% by mass relative to the total amount of the aromatic polycarbonate resin-A and the aromatic polycarbonate resin-B, and wherein a haze value of a plate-like molded article having a thickness of 3.0 mm molded from the aromatic polycarbonate resin composition is 2% or lower, wherein measurement of the haze value for evaluating transparency is carried out in accordance with JIS K-7136, and the number of unmelted polycarbonate pieces having a long diameter of 100 μm or more existing within a region of 5 cm x 3 cm of the plate-like molded article is 10 or less, wherein the number of unmelted polycarbonate pieces having a long diameter of 100 μm or more existing within the region of 5 cm x 3 cm of the 3 mm-thick part of triple-stage plates used for the haze value measurement is counted with a microscope, wherein a test specimen for UL test having a thickness of 1.2 mm molded from the aromatic polycarbonate resin composition satisfies the UL-94 V-0 standard. separately preparing a solution by dissolving an aromatic polycarbonate resin-A having a viscosity-average molecular weight of 3,000-25,000 in a solvent and preparing an another solution by dissolving an aromatic polycarbonate resin-B having a viscosity-average molecular weight of 50,000-90,000 in a solvent; mixing both solutions to prepare a resin solution having the aromatic polycarbonate resin-A and the aromatic polycarbonate resin-B dissolved in the solvent; and removing the solvent from the resulting resin solution, wherein the solvent used for dissolving the aromatic polycarbonate resin-A and the aromatic polycarbonate resin-B is methylene chloride, wherein said aromatic polycarbonate resin composition comprises an alkali metal salt of an organic sulfonic acid and the content of the alkali metal salt of the organic sulfonic acid is 0.005-0.1% by mass relative to the total mass (100% by mass) of the aromatic polycarbonate resin-A and the aromatic polycarbonate resin-B, wherein the aromatic polycarbonate resin-A is contained in an amount of 99-50% by mass and the aromatic polycarbonate resin-B is contained in an amount of 1-50% by mass relative to the total amount of the aromatic polycarbonate resin-A and the aromatic polycarbonate resin-B, and wherein a haze value of a plate-like molded article having a thickness of 3.0 mm molded from the aromatic polycarbonate resin composition is 2% or lower, wherein measurement of the haze value for evaluating transparency is carried out in accordance with JIS K-7136, and the number of unmelted polycarbonate pieces having a long diameter of 100 μm or more existing within a region of 5 cm x 3 cm of the plate-like molded article is 10 or less, wherein the number of unmelted polycarbonate pieces having a long diameter of 100 μm or more existing within the region of 5 cm x 3 cm of the 3 mm-thick part of triple-stage plates used for the haze value measurement is counted with a microscope, wherein a test specimen for UL test having a thickness of 1.2 mm molded from the aromatic polycarbonate resin composition satisfies the UL-94 V-0 standard.