A lithium secondary battery comprising: an electrode body containing a positive electrode and a negative electrode ; a non-aqueous electrolytic solution; and a battery case in which the electrode body and the non-aqueous electrolytic solution are housed, wherein the positive electrode includes a positive electrode active material particle of a hollow structure having a shell portion formed of a lithium transition metal oxide and a hollow portion formed therein, and the negative electrode is provided with a negative electrode active material particle formed of a carbon material; the lithium secondary battery being characterized in that : a long diameter of a primary particle of the lithium transition metal oxide based on SEM observation is 1 μm or less, and a thickness of the shell portion based on SEM observation is 2 μm or less, the lithium transition metal oxide of the shell portion is lamellar; a krypton adsorption amount of the negative electrode active material particle is 3.5 m 2 /g or greater but 4 m 2 /g or less, and for the positive electrode active material particle , a ratio A/B is 0.4 or greater but less than 0.7, where A is a half-weight width of a peak obtained from a diffraction plane of Miller index in a powder X-ray diffraction pattern of the positive electrode active material obtained using a CuKα-beam, and B is a half-weight width of a peak obtained from a diffraction plane of Miller index in the powder X-ray diffraction pattern. an electrode body containing a positive electrode and a negative electrode ; a non-aqueous electrolytic solution; and a battery case in which the electrode body and the non-aqueous electrolytic solution are housed, wherein the positive electrode includes a positive electrode active material particle of a hollow structure having a shell portion formed of a lithium transition metal oxide and a hollow portion formed therein, and the negative electrode is provided with a negative electrode active material particle formed of a carbon material; the lithium secondary battery being characterized in that : a long diameter of a primary particle of the lithium transition metal oxide based on SEM observation is 1 μm or less, and a thickness of the shell portion based on SEM observation is 2 μm or less, the lithium transition metal oxide of the shell portion is lamellar; a krypton adsorption amount of the negative electrode active material particle is 3.5 m 2 /g or greater but 4 m 2 /g or less, and for the positive electrode active material particle , a ratio A/B is 0.4 or greater but less than 0.7, where A is a half-weight width of a peak obtained from a diffraction plane of Miller index in a powder X-ray diffraction pattern of the positive electrode active material obtained using a CuKα-beam, and B is a half-weight width of a peak obtained from a diffraction plane of Miller index in the powder X-ray diffraction pattern. a long diameter of a primary particle of the lithium transition metal oxide based on SEM observation is 1 μm or less, and a thickness of the shell portion based on SEM observation is 2 μm or less, the lithium transition metal oxide of the shell portion is lamellar; a krypton adsorption amount of the negative electrode active material particle is 3.5 m 2 /g or greater but 4 m 2 /g or less, and for the positive electrode active material particle , a ratio A/B is 0.4 or greater but less than 0.7, where A is a half-weight width of a peak obtained from a diffraction plane of Miller index in a powder X-ray diffraction pattern of the positive electrode active material obtained using a CuKα-beam, and B is a half-weight width of a peak obtained from a diffraction plane of Miller index in the powder X-ray diffraction pattern. <EOS>