The invention relates to a method of producing an all-solid battery. The method includes pressing a laminate in a state where the laminate is insulated from a press machine. The laminate includes a negative electrode current collector layer, a negative electrode active material layer, a solid electrolyte layer, and a positive electrode active material layer. The negative electrode current collector layer includes copper, at least one of the negative electrode active material layer and the solid electrolyte layer includes a sulfide solid electrolyte, and the press machine is an anisotropic press machine.