The invention relates to a secondary battery, a method of manufacturing the same, a battery pack, and an electric vehicle. The secondary battery includes: a cathode; an anode; and an electrolytic solution, wherein the anode includes an anode active material layer, the anode active material layer being provided on part of an anode current collector, and a breaking elongation delta2 (percent) of the anode current collector in a second region is larger than a breaking elongation delta1 (percent) of the anode current collector in a first region, the second region not being provided with the anode active material layer, and the first region being provided with the anode active material layer.