A lithium-ion battery, comprising: an electrode assembly; an electrolyte immersing the electrode assembly and comprising a lithium salt and an organic solvent; and a case; wherein the electrode assembly comprises: a negative electrode plate comprising a negative electrode collector and a negative electrode film, the negative electrode film is provided on a surface of the negative electrode collector and comprises a negative electrode active material; a positive electrode plate comprising a positive electrode collector and a positive electrode film, the positive electrode film is provided on a surface of the positive electrode collector and comprises a positive electrode active material; and a separator provided between the negative electrode plate and the positive electrode plate; wherein the negative electrode active material at least comprises a pre-lithium-intercalation compound LiC x, 12≤x≤150; the pre-lithium-intercalation compound LiC x is formed by lithiation of a carbon-based negative electrode material with a lithium metal; wherein the calculation method of the pre-lithium-intercalation compound LiC x is described in the description; a capacity of the negative electrode active material per unit area / (a capacity of the positive electrode active material per unit area + a capacity of active lithium ions of the pre-lithium-intercalation compound LiC x which can be intercalated and deintercalated in the negative electrode film per unit area) >_ 1.10; the organic solvent in the electrolyte comprises a cyclic ester, and a mass of the cyclic ester is equal to or less than 10% of a total mass of the organic solvent in the electrolyte; the carbon-based negative electrode material is one or more selected from a group consisting of natural graphite, artificial graphite, soft carbon, hard carbon, mesocarbon microbeads, nanocarbon and carbon fiber; wherein the positive electrode active material is one or more selected from a group consisting of lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide and olivine-type lithium-containing phosphate. a negative electrode plate comprising a negative electrode collector and a negative electrode film, the negative electrode film is provided on a surface of the negative electrode collector and comprises a negative electrode active material; a positive electrode plate comprising a positive electrode collector and a positive electrode film, the positive electrode film is provided on a surface of the positive electrode collector and comprises a positive electrode active material; and a separator provided between the negative electrode plate and the positive electrode plate; wherein the negative electrode active material at least comprises a pre-lithium-intercalation compound LiC x, 12≤x≤150; the pre-lithium-intercalation compound LiC x is formed by lithiation of a carbon-based negative electrode material with a lithium metal; wherein the calculation method of the pre-lithium-intercalation compound LiC x is described in the description; a capacity of the negative electrode active material per unit area / (a capacity of the positive electrode active material per unit area + a capacity of active lithium ions of the pre-lithium-intercalation compound LiC x which can be intercalated and deintercalated in the negative electrode film per unit area) >_ 1.10; the organic solvent in the electrolyte comprises a cyclic ester, and a mass of the cyclic ester is equal to or less than 10% of a total mass of the organic solvent in the electrolyte; the carbon-based negative electrode material is one or more selected from a group consisting of natural graphite, artificial graphite, soft carbon, hard carbon, mesocarbon microbeads, nanocarbon and carbon fiber; wherein the positive electrode active material is one or more selected from a group consisting of lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide and olivine-type lithium-containing phosphate.