NOVELTY - An all solid-state battery has positive electrode active material layer (1), negative electrode active material layer (2), and solid electrode layer (3). At least one of layer (1,2) has sulfide solid electrolyte material (5), and reaction inhibiting portion (6) containing lithium ion conductor (A,B). Conductor (A) is lithium-containing compound having lithium ion conductivity of 1x 10-7 S/cm or more. Conductor (B) is a lithium-containing compound having a polyanion structure including at least one of boron, silicon, phosphorus, titanium, zirconium, aluminum, and tungsten.    USE - All solid-state battery. Uses include but are not limited to power supply for personal computer, video camera, mobile telephone, communication apparatus, motor vehicle, electric vehicle, hybrid vehicle, etc.    ADVANTAGE - The all solid-state battery is capable of suppressing increase over time in resistance at the interface between positive electrode active material and solid electrolyte material. The battery is easily manufactured, and has excellent lithium ion conductivity and durability.    DETAILED DESCRIPTION - An all solid-state battery comprises a positive electrode active material layer having a positive electrode active material (4), a negative electrode active material layer having a negative electrode active material, and a solid electrode layer formed between the positive electrode active material layer and the negative electrode active material layer. At least one of the positive electrode active material layer and the negative electrode active material layer includes a sulfide solid electrolyte material, and a reaction inhibiting portion formed on the surface of the positive electrode active material. The reaction inhibiting portion includes a lithium ion conductor (A) and a lithium ion conductor (B). The lithium ion conductor (A) is a lithium-containing compound having lithium ion conductivity at room temperature of 1x 10-7 S/cm or more. The lithium ion conductor (B) is a lithium-containing compound having a polyanion structure including at least one of boron, silicon, phosphorus, titanium, zirconium, aluminum, and tungsten. An INDEPENDENT CLAIM is included for manufacture of all-solid-state battery.    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional view of electric power generation element.    Positive electrode active material layer (1)    Negative electrode active material layer (2)    Solid electrolyte layer (3)    Positive electrode active material (4)    Sulfide solid electrolyte material (5)    Reaction inhibiting portion (6)