A progressive-power spectacle lens manufacturing method for a progressive-power spectacle lens of a given addition power including a distance portion, a near portion, and a progressive portion provided between the distance portion and the near portion, a power of the lens changing along a principal meridian between a progression start point provided at a distance-portion-side end of the progressive portion and a progression end point provided at a near-portion-side end of the progressive portion, the method comprising a lens design method, the lens design method comprising: when the addition power is relatively large, selecting a relatively smaller value for a distance (d) along the principal meridian from a fitting point, through which the line of sight passes when a wearer views an object in front thereof, to the progression start point and selecting a relatively larger value for a length of a progressive corridor defined by the progression start point and the progression end point, and, when the addition power is relatively small, selecting a relatively larger value for the distance (d) along the principal meridian from the fitting point to the progression start point and selecting a relatively smaller value for the length of the progressive corridor, wherein the sum of the distance (d) along the principal meridian from the fitting point to the progression start point and the length of the progressive corridor between the progression start point and the progression end point is fixed irrespective of the addition power, wherein along the principal meridian, the dioptric power is set at D1 from the distance portion to the fitting point, is also set at D1 from the fitting point to the progression start point, increases from D1 to D2 from the progression start point to the progression end point, and is set at D2 from the progression end point to the lower end of the near portion, and shaping a spectacle lens according to the design obtained. when the addition power is relatively large, selecting a relatively smaller value for a distance (d) along the principal meridian from a fitting point, through which the line of sight passes when a wearer views an object in front thereof, to the progression start point and selecting a relatively larger value for a length of a progressive corridor defined by the progression start point and the progression end point, and, when the addition power is relatively small, selecting a relatively larger value for the distance (d) along the principal meridian from the fitting point to the progression start point and selecting a relatively smaller value for the length of the progressive corridor, wherein the sum of the distance (d) along the principal meridian from the fitting point to the progression start point and the length of the progressive corridor between the progression start point and the progression end point is fixed irrespective of the addition power, wherein along the principal meridian, the dioptric power is set at D1 from the distance portion to the fitting point, is also set at D1 from the fitting point to the progression start point, increases from D1 to D2 from the progression start point to the progression end point, and is set at D2 from the progression end point to the lower end of the near portion, and shaping a spectacle lens according to the design obtained.