An all-solid lithium battery comprising: an oriented positive electrode plate that is a lithium complex oxide sintered plate having a porosity of 30 to 50%, wherein the porosity is determined as described in the description and wherein the lithium complex oxide sintered plate contains a plurality of primary grains composed of lithium complex oxide having a layered rock salt structure, and the primary grains are oriented at a mean orientation angle of more than 0° to 30° to a main face of the oriented positive electrode plate, wherein the orientation angle is a tilt angle of the plane of each primary grain to a main face of the oriented positive electrode plate determined as described in the description; a negative electrode plate containing Ti and capable of intercalating and deintercalating lithium ions at 0.4 V or higher (vs. Li/Li +); and a solid electrolyte having a melting point lower than a melting point or decomposition temperature of the oriented positive electrode plate and the negative electrode plate, wherein at least 30% of pores in the oriented positive electrode plate is filled with the solid electrolyte in an observation of a cross-section perpendicular to a main face of the oriented positive electrode plate, (i) wherein the solid electrolyte is represented by a formula xLiOH·yLi 2 SO 4 where x+y=1, and 0.6≤x≤0.95 or (ii) wherein the solid electrolyte is represented by a formula Li a b F c Br where 1.8≤a≤2.3, b=a-c-1, and 0.01≤c≤0.11 and comprises an antiperovskite crystal phase. an oriented positive electrode plate that is a lithium complex oxide sintered plate having a porosity of 30 to 50%, wherein the porosity is determined as described in the description and wherein the lithium complex oxide sintered plate contains a plurality of primary grains composed of lithium complex oxide having a layered rock salt structure, and the primary grains are oriented at a mean orientation angle of more than 0° to 30° to a main face of the oriented positive electrode plate, wherein the orientation angle is a tilt angle of the plane of each primary grain to a main face of the oriented positive electrode plate determined as described in the description; a negative electrode plate containing Ti and capable of intercalating and deintercalating lithium ions at 0.4 V or higher (vs. Li/Li +); and a solid electrolyte having a melting point lower than a melting point or decomposition temperature of the oriented positive electrode plate and the negative electrode plate, wherein at least 30% of pores in the oriented positive electrode plate is filled with the solid electrolyte in an observation of a cross-section perpendicular to a main face of the oriented positive electrode plate, (i) wherein the solid electrolyte is represented by a formula xLiOH·yLi 2 SO 4 where x+y=1, and 0.6≤x≤0.95 or (ii) wherein the solid electrolyte is represented by a formula Li a b F c Br where 1.8≤a≤2.3, b=a-c-1, and 0.01≤c≤0.11 and comprises an antiperovskite crystal phase. (i) wherein the solid electrolyte is represented by a formula xLiOH·yLi 2 SO 4 where x+y=1, and 0.6≤x≤0.95 or (ii) wherein the solid electrolyte is represented by a formula Li a b F c Br where 1.8≤a≤2.3, b=a-c-1, and 0.01≤c≤0.11 and comprises an antiperovskite crystal phase.