Method for manufacturing alkaline dry battery, and alkaline dry battery

This method for manufacturing an alkaline dry battery is provided with first to third steps. In the first step, a hollow cylindrical first positive electrode pellet having a first end surface and a second end surface in the axial direction is prepared. In the second step, a hollow cylindrical positive electrode pellet group containing the first positive electrode pellet is inserted into the case to obtain a positive electrode inscribed in the case. At this time, the first positive electrode pellet is disposed closest to the opening side of the case such that the first end surface faces the opening side of the case. In the third step, an annular groove is provided in a side portion of the housing. The first positive electrode pellet is provided with a tapered portion whose outer diameter decreases from the second end face to the first end face, and in a cross-section along the axial direction of the first positive electrode pellet, the inclination angle theta of the tapered portion with respect to the axis of