A secondary battery comprising: an outer can also serving as a terminal of one electrode, and having an opening; a sealing body sealing the opening of the outer can; and an inner housing component (104, 128) housed with an electrolyte inside the outer can, wherein the sealing body includes a lid plate fitted to the opening, the lid plate having an exhaust hole at a center, a valve body arranged at a position closing the exhaust hole from the outside of the lid plate, and a cap member also serving as a terminal of the other electrode and electrically connected to the lid plate, the cap member housing the valve body inside with the valve body pressed toward the lid plate, the inner housing component includes an electrode group wound in a spiral shape with the one electrode and the other electrode stacked via a separator, and having a cylindrical shape as a whole including an electrode group through hole penetrating the spiral winding center part, a current collector arranged on the top of the electrode group, the current collector having a current collector center through hole provided at a position facing the electrode group through hole of the electrode group, and a current collecting lead arranged between the current collector and the sealing body, the current collecting lead has a top wall located on a side of the sealing body, a bottom wall facing the top wall, and located on a side of the current collector, and a pair of side walls (42, 44) extending between a side edge of the top wall and a side edge of the bottom wall, and facing each other, the top wall includes a top wall through hole provided at a position facing the exhaust hole, the bottom wall includes a bottom wall through hole provided at a position facing the current collector center through hole, the inner housing component includes a through hole having an inner diameter dimension DG equal to or less than an inner diameter dimension DL of the exhaust hole at a position facing the exhaust hole, and the current collector center through hole having an inner diameter dimension DC, the top wall through hole having an inner diameter dimension DT and the bottom wall through hole having an inner diameter dimension DB which are configured such that a relation of DL≥DT≥DB≥DC is satisfied. an outer can also serving as a terminal of one electrode, and having an opening; a sealing body sealing the opening of the outer can; and an inner housing component (104, 128) housed with an electrolyte inside the outer can, wherein the sealing body includes a lid plate fitted to the opening, the lid plate having an exhaust hole at a center, a valve body arranged at a position closing the exhaust hole from the outside of the lid plate, and a cap member also serving as a terminal of the other electrode and electrically connected to the lid plate, the cap member housing the valve body inside with the valve body pressed toward the lid plate, the inner housing component includes an electrode group wound in a spiral shape with the one electrode and the other electrode stacked via a separator, and having a cylindrical shape as a whole including an electrode group through hole penetrating the spiral winding center part, a current collector arranged on the top of the electrode group, the current collector having a current collector center through hole provided at a position facing the electrode group through hole of the electrode group, and a current collecting lead arranged between the current collector and the sealing body, the current collecting lead has a top wall located on a side of the sealing body, a bottom wall facing the top wall, and located on a side of the current collector, and a pair of side walls (42, 44) extending between a side edge of the top wall and a side edge of the bottom wall, and facing each other, the top wall includes a top wall through hole provided at a position facing the exhaust hole, the bottom wall includes a bottom wall through hole provided at a position facing the current collector center through hole, the inner housing component includes a through hole having an inner diameter dimension DG equal to or less than an inner diameter dimension DL of the exhaust hole at a position facing the exhaust hole, and the current collector center through hole having an inner diameter dimension DC, the top wall through hole having an inner diameter dimension DT and the bottom wall through hole having an inner diameter dimension DB which are configured such that a relation of DL≥DT≥DB≥DC is satisfied.