An embodiment of the present invention relates to a lithium secondary battery comprising a nonaqueous electrolytic solution comprising a phosphate compound represented by the following general formula (1): O═P(O—R1)(O—R2)(O—R3) (1), wherein R1, R2, and R3 are each alkyl group or the like or a group comprising an ether bond represented by —R4—O—R5 (R4 represents alkylene group, and R5 represents alkyl group), and at least one of R1, R2, and R3 is a group comprising an ether bond, and at least one of R1, R2, and R3 contains fluorine, and a positive electrode active material having a charge and discharge region of 4.5 V or more versus lithium.