A method of manufacturing a non-aqueous electrolyte secondary battery that is equipped with a wound electrode body that is formed by laminating a positive electrode, which has positive electrode active material layers provided on both faces of a positive electrode current collector thereof respectively, and a negative electrode, which has negative electrode active material layers provided on both faces of a negative electrode current collector thereof respectively, on each other via a separator, and winding a lamination of the positive electrode, the negative electrode, and the separator, the method comprising: preparing the wound electrode body in which an uncoated portion where the positive electrode active material layers are not formed is laminated in a state of protruding from the negative electrode at one of both ends of the wound electrode body in a direction of a winding axis thereof, an uncoated portion where the negative electrode active material layers are not formed is laminated in a state of protruding from the positive electrode at the other of both the ends of the wound electrode body in the direction of the winding axis thereof, and; structuring the secondary battery by accommodating the wound electrode body as well as a non-aqueous electrolyte in a battery case; and subjecting the secondary battery to an aging treatment in which the secondary battery is retained within a temperature range that is equal to or higher than 60°C, the method being characterized in that the positive electrode active material layers are not formed on either face of the positive electrode current collector on a winding outer peripheral side thereof in the region that includes at least the outermost periphery of the positive electrode in the direction of the winding axis; and a length of the region where the positive electrode active material layers are not formed is configured to allow an outer periphery of the wound electrode body to be wound over its entire circumference. preparing the wound electrode body in which an uncoated portion where the positive electrode active material layers are not formed is laminated in a state of protruding from the negative electrode at one of both ends of the wound electrode body in a direction of a winding axis thereof, an uncoated portion where the negative electrode active material layers are not formed is laminated in a state of protruding from the positive electrode at the other of both the ends of the wound electrode body in the direction of the winding axis thereof, and; structuring the secondary battery by accommodating the wound electrode body as well as a non-aqueous electrolyte in a battery case; and subjecting the secondary battery to an aging treatment in which the secondary battery is retained within a temperature range that is equal to or higher than 60°C, the method being characterized in that the positive electrode active material layers are not formed on either face of the positive electrode current collector on a winding outer peripheral side thereof in the region that includes at least the outermost periphery of the positive electrode in the direction of the winding axis; and a length of the region where the positive electrode active material layers are not formed is configured to allow an outer periphery of the wound electrode body to be wound over its entire circumference.