A steam turbine facility includes a rotor shaft, a high-pressure turbine blade row and an intermediate-pressure turbine blade row disposed on the rotor shaft, a first low-pressure turbine blade row and a second low-pressure turbine blade row disposed on the rotor shaft on both sides of the intermediate-pressure turbine blade row, respectively, and a third low-pressure turbine blade row and a fourth low-pressure turbine blade row disposed on the rotor shaft on both sides of the high-pressure turbine blade row, respectively. The steam turbine facility is configured such that steam having passed through the intermediate-pressure turbine blade row is divided to flow into the first low-pressure turbine blade row, the second low-pressure turbine blade row, the third low-pressure turbine blade row, and the fourth low-pressure turbine blade row.