A method for manufacturing an armature including an armature core provided with a plurality of slots extending in a central axis line direction; and a coil part including a plurality of segment conductors having leg parts (42a, 42b) extending in the central axis line direction, the plurality of leg parts (42a, 42b) being joined together, the method comprising: a step of disposing, in the plurality of slots, both of first leg parts of first segment conductors disposed on one side in a central axis line direction of the armature core among the plurality of segment conductors and second leg parts of second segment conductors disposed on an other side in a central axis line direction of the armature core; and a joining step of joining together the first segment conductors and the second segment conductors disposed in the plurality of slots, wherein the joining step includes a step of independently pressing pressing-target segment conductors (71, 81) by a plurality of pressing jigs disposed for each of the pressing-target segment conductors (71, 81), such that the plurality of pressing jigs are movable relative to each other, at least either one of the first segment conductors and the second segment conductors disposed in the plurality of slots serving as the pressing-target segment conductors (71, 81), the step of pressing the pressing-target segment conductors (71, 81) is a step of pressing the pressing-target segment conductors (71, 81) by positioning the plurality of pressing jigs disposed for each of the pressing-target segment conductors (71, 81), and then allowing the positioned pressing jigs to move, the pressing jigs include first pressing jigs disposed for each of the plurality of slots and configured to be radially movable, and the plurality of segment conductors are radially arranged side by side in the single slot, characterized in that the step of pressing the pressing-target segment conductors (71, 81) is a step of pressing the pressing-target segment conductors (71, 81) by positioning the first pressing jigs disposed for each of the plurality of slots by allowing the first pressing jigs to independently and radially move to come into contact with the first segment conductors and the second segment conductors, and then allowing the first pressing jigs disposed for each of the plurality of slots to simultaneously and radially move, and the step of pressing the pressing-target segment conductors (71, 81) by allowing the first pressing jigs to radially move is a step of independently and radially pressing the segment conductor disposed on an innermost side in each of the plurality of slots by a corresponding one of the first pressing jigs, and pressing other segment conductors disposed between the segment conductor disposed on the innermost side and a yoke part of the armature core by the segment conductors radially adjacent to the other segment conductors. a step of disposing, in the plurality of slots, both of first leg parts of first segment conductors disposed on one side in a central axis line direction of the armature core among the plurality of segment conductors and second leg parts of second segment conductors disposed on an other side in a central axis line direction of the armature core; and a joining step of joining together the first segment conductors and the second segment conductors disposed in the plurality of slots, wherein the joining step includes a step of independently pressing pressing-target segment conductors (71, 81) by a plurality of pressing jigs disposed for each of the pressing-target segment conductors (71, 81), such that the plurality of pressing jigs are movable relative to each other, at least either one of the first segment conductors and the second segment conductors disposed in the plurality of slots serving as the pressing-target segment conductors (71, 81), the step of pressing the pressing-target segment conductors (71, 81) is a step of pressing the pressing-target segment conductors (71, 81) by positioning the plurality of pressing jigs disposed for each of the pressing-target segment conductors (71, 81), and then allowing the positioned pressing jigs to move, the pressing jigs include first pressing jigs disposed for each of the plurality of slots and configured to be radially movable, and the plurality of segment conductors are radially arranged side by side in the single slot, characterized in that the step of pressing the pressing-target segment conductors (71, 81) is a step of pressing the pressing-target segment conductors (71, 81) by positioning the first pressing jigs disposed for each of the plurality of slots by allowing the first pressing jigs to independently and radially move to come into contact with the first segment conductors and the second segment conductors, and then allowing the first pressing jigs disposed for each of the plurality of slots to simultaneously and radially move, and the step of pressing the pressing-target segment conductors (71, 81) by allowing the first pressing jigs to radially move is a step of independently and radially pressing the segment conductor disposed on an innermost side in each of the plurality of slots by a corresponding one of the first pressing jigs, and pressing other segment conductors disposed between the segment conductor disposed on the innermost side and a yoke part of the armature core by the segment conductors radially adjacent to the other segment conductors.