An all-solid-state battery comprising: a positive-electrode current collector; a positive electrode layer which is formed on the positive-electrode current collector and includes at least a positive-electrode active material; a negative-electrode current collector; a negative electrode layer which is formed on the negative-electrode current collector and includes at least a negative-electrode active material; and a solid electrolyte layer which is disposed between the positive electrode layer and the negative electrode layer and includes at least a solid electrolyte having ion conductivity, wherein the members from the group consisting of the positive-electrode current collector, the positive electrode layer, the solid electrolyte layer, the negative-electrode current collector, and the negative electrode layer include a heated region in which an influence of heat has been received at a circumferential portion of the members, characterized in that the circumferential portion of the negative electrode layer protrudes outwardly in comparison to the circumferential portion of the positive electrode layer, the circumferential portion of the positive-electrode current collector and the circumferential portion of the negative-electrode current collector protrude outwardly in comparison to the circumferential portion of the positive electrode layer and the circumferential portion of the negative electrode layer, the circumferential portion of the solid electrolyte layer protrudes outwardly in comparison to the circumferential portion of the positive-electrode current collector and the circumferential portion of the negative-electrode current collector; and in that, in the heated region of the positive-electrode current collector, the heated region of the positive electrode layer adjacent to the positive-electrode current collector, the heated region of the negative-electrode current collector, and the heated region of the negative electrode layer adjacent to the negative-electrode current collector, a metal material which is melted and is included in the positive-electrode current collector is in void between particles of the positive electrode layer adjacent to the positive-electrode current collector, and a metal material which is melted and is included in the negative-electrode current collector is in void between particles of the negative electrode layer adjacent to the negative-electrode current collector. a positive-electrode current collector; a positive electrode layer which is formed on the positive-electrode current collector and includes at least a positive-electrode active material; a negative-electrode current collector; a negative electrode layer which is formed on the negative-electrode current collector and includes at least a negative-electrode active material; and a solid electrolyte layer which is disposed between the positive electrode layer and the negative electrode layer and includes at least a solid electrolyte having ion conductivity, wherein the members from the group consisting of the positive-electrode current collector, the positive electrode layer, the solid electrolyte layer, the negative-electrode current collector, and the negative electrode layer include a heated region in which an influence of heat has been received at a circumferential portion of the members, characterized in that the circumferential portion of the negative electrode layer protrudes outwardly in comparison to the circumferential portion of the positive electrode layer, the circumferential portion of the positive-electrode current collector and the circumferential portion of the negative-electrode current collector protrude outwardly in comparison to the circumferential portion of the positive electrode layer and the circumferential portion of the negative electrode layer, the circumferential portion of the solid electrolyte layer protrudes outwardly in comparison to the circumferential portion of the positive-electrode current collector and the circumferential portion of the negative-electrode current collector; and in that, in the heated region of the positive-electrode current collector, the heated region of the positive electrode layer adjacent to the positive-electrode current collector, the heated region of the negative-electrode current collector, and the heated region of the negative electrode layer adjacent to the negative-electrode current collector, a metal material which is melted and is included in the positive-electrode current collector is in void between particles of the positive electrode layer adjacent to the positive-electrode current collector, and a metal material which is melted and is included in the negative-electrode current collector is in void between particles of the negative electrode layer adjacent to the negative-electrode current collector.