A method for manufacturing a laminated rotor core, comprising: a stamping step of forming two band-shaped core sheets (11, 12) by punching out of a steel strip by a pressing machine, the band-shaped core sheets (11, 12) having arc-shaped segment core sheets (15, 15a), the adjacent segment core sheets (15, 15a) connected together by connecting portions (16, 16a) provided therebetween, each segment core sheet (15, 15a) having a plurality of pole sections (13, 14, 13a, 14a) protruding radially outward; and an annular shape forming step of winding in spiral form and laminating the band-shaped core sheets (11, 12) while bending the two band-shaped core sheets (11, 12) at the connecting portions (16, 16a), the two band-shaped core sheets (11, 12) are superimposed one on another in a manner that the pole sections (13, 14a) and the pole sections (14, 13a) are aligned with each other, whereas the connecting portions (16, 16a) are in different positions; characterized in that in the stamping step, pilot holes (19, 20, 19a, 20a) consisting of a through hole having a circular cross section are formed to the radially inward sides of magnet insertion holes (17, 18, 17a, 18a), the magnet insertion holes (17, 18, 17a, 18a) provided in the segment core sheets (15, 15a), while interlocking portions (21, 21a) are formed on both sides in the circumferential direction with respect to each of the pilot holes (19, 20, 19a, 20a), and in the annular shape forming step, the pilot holes (19, 20, 19a, 20a) are used for the positioning of the segment core sheets (15, 15a), and the segment core sheets (15, 15a) are pressed by a pressing tool, and thus the core sheets (15, 15a) are laminated while being interlocked with each other. a stamping step of forming two band-shaped core sheets (11, 12) by punching out of a steel strip by a pressing machine, the band-shaped core sheets (11, 12) having arc-shaped segment core sheets (15, 15a), the adjacent segment core sheets (15, 15a) connected together by connecting portions (16, 16a) provided therebetween, each segment core sheet (15, 15a) having a plurality of pole sections (13, 14, 13a, 14a) protruding radially outward; and an annular shape forming step of winding in spiral form and laminating the band-shaped core sheets (11, 12) while bending the two band-shaped core sheets (11, 12) at the connecting portions (16, 16a), the two band-shaped core sheets (11, 12) are superimposed one on another in a manner that the pole sections (13, 14a) and the pole sections (14, 13a) are aligned with each other, whereas the connecting portions (16, 16a) are in different positions; characterized in that in the stamping step, pilot holes (19, 20, 19a, 20a) consisting of a through hole having a circular cross section are formed to the radially inward sides of magnet insertion holes (17, 18, 17a, 18a), the magnet insertion holes (17, 18, 17a, 18a) provided in the segment core sheets (15, 15a), while interlocking portions (21, 21a) are formed on both sides in the circumferential direction with respect to each of the pilot holes (19, 20, 19a, 20a), and in the annular shape forming step, the pilot holes (19, 20, 19a, 20a) are used for the positioning of the segment core sheets (15, 15a), and the segment core sheets (15, 15a) are pressed by a pressing tool, and thus the core sheets (15, 15a) are laminated while being interlocked with each other.