NOVELTY - Manufacture of sulfide solid electrolyte material involves mixing raw material composition containing lithium halogen compound (I), lithium sulfide and sulfide of compound (A) chosen from phosphorus, silicon, germanium, aluminum and boron, obtaining intermediate component having lithium ionic conductivity of 1x 10-3S/cm2 or less, performing X-ray diffraction measurement in heat-treatment process by heating the obtained intermediate component at temperature more than crystallization temperature in which peak of 2( theta ) occurs at 20.2 degrees and 23.6 degrees and obtaining glass ceramics.    USE - Manufacture of sulfide solid electrolyte material used for lithium solid battery (claimed). Uses include but are not limited to personal computer, video camera, mobile telephone, communication apparatus, electric vehicle and hybrid vehicle.    ADVANTAGE - The method efficiently enables manufacture of sulfide solid electrolyte material having high lithium ionic conductivity. The lithium solid battery provided using sulfide solid electrolyte is economical and has high energy density and excellent charging and discharging characteristics.    DETAILED DESCRIPTION - Manufacture of sulfide solid electrolyte material involves mixing raw material composition containing lithium halogen compound of formula: LiX (I), lithium sulfide and sulfide of compound (A) chosen from phosphorus, silicon, germanium, aluminum and boron, obtaining intermediate component having lithium ionic conductivity of 1x 10-3S/cm2 or less, performing X-ray diffraction measurement in heat-treatment process by heating the obtained intermediate component at temperature more than crystallization temperature in which peak of 2( theta ) occurs at 20.2 degrees and 23.6 degrees and obtaining glass ceramics. The glass ceramics is obtained by adjusting the ratio of heating temperature in heat-treatment process and heating time of lithium halogen compound in the raw material composition.    X=halogen.    An INDEPENDENT CLAIM is included for lithium solid battery, which comprises solid electrolyte material layer formed between negative electrode active material layer containing negative electrode active material, and positive electrode active material layer containing positive electrode active material, in which at least one of solid electrolyte material layer, negative electrode active material layer and positive electrode active material layer comprises sulfide solid electrolyte material.