An object is to more appropriately perform settings in the setting of the control of a machine tool. A setting device includes: a first reception unit which receives the specification of a first setting value for at least one or more parameters on the control of a machine tool; a second reception unit which receives the specification of a second setting value for the parameter after the reception of the first setting value; a third reception unit which receives the specification of a selection condition for determining which one of the first setting value and the second setting value is selected; and a selection unit which selects, based on the selection condition whose specification is received by the third reception unit, any one of the first setting value and the second setting value as a setting value that is applied to the parameter.