A method for producing a stabilizer using a hollow member including a cross-section varying part (114, 114A, 115, 115A) in which a cross sectional area varies along a central axis from a small cross sectional area part (111, 111A, 112, 112A) having a small cross sectional area to a large cross sectional area part (113, 113A) having a large cross sectional area as a starting material, the method comprising: a heating process in which the hollow member is heated up to a temperature necessary to perform heat treatment by performing an energization heating of the hollow member, wherein the heating process comprises a primary heating process and a secondary heating process, performed in this order, wherein in the primary heating process, the energization heating is performed between primary electrodes (211A, 211B) arranged at the cross-section varying part (114, 114A, 115, 115B) of both ends of the large cross sectional area part (113, 113A), and wherein in the secondary heating process, the energization heating is performed between secondary electrodes arranged at both ends of the hollow member, characterized in that in the primary heating process, the electrodes (211A, 211B) arranged at the cross section varying part (114, 114A, 115, 115A) are arranged apart from an interface part of the large cross sectional area part (113, 113A) and the cross section varying part (114, 114A, 115, 115A), and a position along axis direction of an edge of the electrode (211A, 211B) at the side of the large cross sectional area part (113, 113A) is aligned to a position along an axial direction at which a cross sectional area ratio with respect to the large cross sectional area part (113, 113A) in the cross section varying part (114, 114A, 115, 115A) is 90 %, and alternatively, is aligned to a position closer to the side of the small cross sectional area part (111, 111A, 112, 112A) than the position at which the cross sectional area ratio is 90 %. a heating process in which the hollow member is heated up to a temperature necessary to perform heat treatment by performing an energization heating of the hollow member, wherein the heating process comprises a primary heating process and a secondary heating process, performed in this order, wherein in the primary heating process, the energization heating is performed between primary electrodes (211A, 211B) arranged at the cross-section varying part (114, 114A, 115, 115B) of both ends of the large cross sectional area part (113, 113A), and wherein in the secondary heating process, the energization heating is performed between secondary electrodes arranged at both ends of the hollow member, characterized in that in the primary heating process, the electrodes (211A, 211B) arranged at the cross section varying part (114, 114A, 115, 115A) are arranged apart from an interface part of the large cross sectional area part (113, 113A) and the cross section varying part (114, 114A, 115, 115A), and a position along axis direction of an edge of the electrode (211A, 211B) at the side of the large cross sectional area part (113, 113A) is aligned to a position along an axial direction at which a cross sectional area ratio with respect to the large cross sectional area part (113, 113A) in the cross section varying part (114, 114A, 115, 115A) is 90 %, and alternatively, is aligned to a position closer to the side of the small cross sectional area part (111, 111A, 112, 112A) than the position at which the cross sectional area ratio is 90 %.