SOLID-STATE SECONDARY BATTERY

A solid-state secondary battery is provided which can suppress chemical degradation from charging/discharging. A solid-state secondary battery includes a laminate body made by a positive electrode layer, solid electrolyte layer and negative electrode layer being laminated, and a first solid electrolyte having oxidation resistance and a second solid electrolyte having reduction resistance, in which content of a first solid electrolyte is greater than a second solid electrolyte in a solid electrolyte contained in the positive electrode layer, content of the first solid electrolyte is greater than the second solid electrolyte in a solid electrolyte contained in a region on a side of the positive electrode layer of the solid electrolyte layer, and content of the second solid electrolyte is greater than content of the first solid electrolyte in a solid electrolyte contained in a region on a side of the negative electrode layer of the solid electrolyte layer.