A solid state battery includes an electrode laminate including an intermediate layer, a first solid electrolyte layer, a positive electrode, and a second solid electrolyte layer sequentially laminated on a negative electrode. The positive electrode includes a positive electrode tab extending therefrom. One of the first solid electrolyte layer or the second solid electrolyte layer includes a porous substrate. One other of the first solid electrolyte layer or the second solid electrolyte layer does not include a porous substrate. When the electrode laminate is viewed from above, outer peripheral ends of the first solid electrolyte layer and the second solid electrolyte layer are located outside an outer peripheral end of the positive electrode, and the first solid electrolyte layer and the second solid electrolyte layer are bonded to each other in a region not opposed to the positive electrode and the positive electrode tab.