An all-solid-state battery includes an all-solid-state battery laminate including at least one all-solid-state unit cell in which a positive electrode current collector layer, a positive electrode active material layer, a solid electrolyte layer, a negative electrode active material layer, and a negative electrode current collector layer are laminated in this order, and a resin layer covering a side surface of the all-solid-state battery laminate, wherein the resin layer has a multi-layer structure including a first resin layer and a second resin layer in this order from the side in the vicinity of the side surface of the all-solid-state battery laminate, and wherein the elastic modulus of the first resin layer is lower than the elastic modulus of the second resin layer.