NOVELTY - A sulfide solid electrolyte material comprises metal (M1) element, metal (M2) element, sulfur element and oxygen element. The metal (M1) element contains lithium. The metal (M2) element contains phosphorus, antimony, silicon, germanium, tin, boron, aluminum, gallium, indium, titanium, zirconium, vanadium and niobium. The sulfide solid electrolyte material has a peak at angle (2( theta )) of 29.58 plus minus 0.5 degrees in an X-ray diffraction measurement using a copper-K( alpha ) ray.    USE - Sulfide solid electrolyte material is used as battery (claimed) used as power supply for video camera, mobile telephone, communication apparatus, and motor vehicle for electric vehicle and hybrid vehicle.    ADVANTAGE - The sulfide solid electrolyte material has excellent ion conductivity, and is manufactured efficiently.    DETAILED DESCRIPTION - A sulfide solid electrolyte material comprises metal (M1) element, metal (M2) element, sulfur element and oxygen element. The metal (M1) element contains lithium. The metal (M2) element contains phosphorus, antimony, silicon, germanium, tin, boron, aluminum, gallium, indium, titanium, zirconium, vanadium and niobium. The sulfide solid electrolyte material has a peak at angle (2( theta )) of 29.58 plus minus 0.5 degrees in an X-ray diffraction measurement using a copper-K( alpha ) ray, and diffraction peak intensity (IA) at angle (2( theta )) of 29.58 plus minus 0.5 degrees and diffraction peak intensity (IB) at angle (2( theta )) of 27.33 plus minus 0.5 degrees . The value of diffraction peak intensity (IB) and diffraction peak intensity (IA) is less than 0.50. INDEPENDENT CLAIMS are included for the following:    (1) battery, which contains positive electrode active material layer containing positive electrode active material, negative electrode active material layer containing negative electrode active material, and electrolyte layer formed between positive electrode active material layer and negative electrode active material layer and containing sulfide solid electrolyte material; and    (2) manufacture of sulfide solid electrolyte material, which involves using raw material composition, combining the amorphized ion-conductive material by mechanical milling, and heating amorphized ion-conductive material.