A manufacturing method of a honeycomb structure (300, 300a), comprising: a step of coating a surface of each of releasing sheets (22, 22a) with a paste for an electrode, to prepare electrode forming sheets (23, 23a) in which the one surface of each of the releasing sheets (22, 22a) is provided with an electrode paste film; a formed honeycomb body with the electrode forming sheets (110, 110a) forming step of attaching the electrode forming sheets (23, 23a) to a side surface of a tubular formed ceramic honeycomb body which is a curved surface, the formed ceramic honeycomb body having partition walls with which a plurality of cells extending from one end surface to the other end surface are formed to become through channels of a fluid, and an outer peripheral wall positioned at the outermost periphery, so that the electrode paste films adhere on the side surface of the formed ceramic honeycomb body, to prepare a formed honeycomb body with the electrode forming sheets (110, 110a) which is the formed ceramic honeycomb body having the side surface provided with the electrode forming sheets (23, 23a); and a honeycomb structure (300, 300a) forming step of removing the releasing sheets (22, 22a) from the formed honeycomb body with the electrode forming sheets (110, 100a) to form the formed honeycomb body with the pastes for the electrodes, and then firing the formed honeycomb body with the pastes for the electrodes to obtain a honeycomb structure (300, 300a) having the side surface provided with the electrodes (21, 21a); wherein a thickness of each releasing sheet (22, 22a) is from 38 to 300 μm; wherein a surface roughness Ra of each releasing sheet (22, 22a) is from 0.05 to 10 μm; and wherein in a cross section of the honeycomb structure (300, 300a) which is orthogonal to an extending direction of the cells, 0.5 time a center angle (θ) of each of the electrodes (21, 21a) is from 15° to 65°. a step of coating a surface of each of releasing sheets (22, 22a) with a paste for an electrode, to prepare electrode forming sheets (23, 23a) in which the one surface of each of the releasing sheets (22, 22a) is provided with an electrode paste film; a formed honeycomb body with the electrode forming sheets (110, 110a) forming step of attaching the electrode forming sheets (23, 23a) to a side surface of a tubular formed ceramic honeycomb body which is a curved surface, the formed ceramic honeycomb body having partition walls with which a plurality of cells extending from one end surface to the other end surface are formed to become through channels of a fluid, and an outer peripheral wall positioned at the outermost periphery, so that the electrode paste films adhere on the side surface of the formed ceramic honeycomb body, to prepare a formed honeycomb body with the electrode forming sheets (110, 110a) which is the formed ceramic honeycomb body having the side surface provided with the electrode forming sheets (23, 23a); and a honeycomb structure (300, 300a) forming step of removing the releasing sheets (22, 22a) from the formed honeycomb body with the electrode forming sheets (110, 100a) to form the formed honeycomb body with the pastes for the electrodes, and then firing the formed honeycomb body with the pastes for the electrodes to obtain a honeycomb structure (300, 300a) having the side surface provided with the electrodes (21, 21a); wherein a thickness of each releasing sheet (22, 22a) is from 38 to 300 μm; wherein a surface roughness Ra of each releasing sheet (22, 22a) is from 0.05 to 10 μm; and wherein in a cross section of the honeycomb structure (300, 300a) which is orthogonal to an extending direction of the cells, 0.5 time a center angle (θ) of each of the electrodes (21, 21a) is from 15° to 65°.