A manufacturing method for a copper base rolled alloy comprising: a rolling step of rolling an alloy cast body under the rolling condition in which the friction coefficient μ is 0.2 or more and the equivalent strain ε represented by the following Formula becomes 1.6 or more; ε ̅ = 2 3 φ ln 1 1 − r where φ 1 + 1 − r 2 r 2 − r tan θ 2 r: rolling reduction rate; θ: apparent shear angle after rolling of an element, which is perpendicular to a sheet surface before rolling, at a predetermined position in a sheet thickness direction; φ: shear coefficient; the rolling step being carried out with shear deformation, wherein a <111>//ND texture is provided, the alloy cast body having a copper base alloy composition containing 0.05 percent by mass or more, and 10 percent by mass or less of at least one type of element selected from Be, Mg, Si, Ti, Co, and Ni and not containing P at a concentration more than or equal to the concentration of incidental impurities, the balance being copper, wherein in a Cu-Be alloy the content of Be is 0.05 percent by mass or more and 2.0 percent by mass or less; in a Cu-Ti alloy the content to Ti is 2.0 percent by mass or more and 5.0 percent by mass or less; and in a Cu-Ni-Si alloy the content of Ni is 1.0 percent by mass or more and 4.7 percent by mass or less and the content of Si is 0.3 percent by mass or more and 1.2 percent by mass or less; and a solution treatment step of converting a workpiece, which has been subjected to the rolling step, to a solid solution at 700°C or higher, and 1,000°C or lower. a rolling step of rolling an alloy cast body under the rolling condition in which the friction coefficient μ is 0.2 or more and the equivalent strain ε represented by the following Formula becomes 1.6 or more; ε ̅ = 2 3 φ ln 1 1 − r where φ 1 + 1 − r 2 r 2 − r tan θ 2 r: rolling reduction rate; θ: apparent shear angle after rolling of an element, which is perpendicular to a sheet surface before rolling, at a predetermined position in a sheet thickness direction; φ: shear coefficient; r: rolling reduction rate; θ: apparent shear angle after rolling of an element, which is perpendicular to a sheet surface before rolling, at a predetermined position in a sheet thickness direction; φ: shear coefficient; the rolling step being carried out with shear deformation, wherein a <111>//ND texture is provided, the alloy cast body having a copper base alloy composition containing 0.05 percent by mass or more, and 10 percent by mass or less of at least one type of element selected from Be, Mg, Si, Ti, Co, and Ni and not containing P at a concentration more than or equal to the concentration of incidental impurities, the balance being copper, wherein in a Cu-Be alloy the content of Be is 0.05 percent by mass or more and 2.0 percent by mass or less; in a Cu-Ti alloy the content to Ti is 2.0 percent by mass or more and 5.0 percent by mass or less; and in a Cu-Ni-Si alloy the content of Ni is 1.0 percent by mass or more and 4.7 percent by mass or less and the content of Si is 0.3 percent by mass or more and 1.2 percent by mass or less; and a solution treatment step of converting a workpiece, which has been subjected to the rolling step, to a solid solution at 700°C or higher, and 1,000°C or lower.