The invention discloses a low-temperature lithium-ion battery. The low-temperature lithium-ion battery comprises a positive plate, a membrane, a negative plate and an electrolytic solution, wherein the positive plate comprises a ternary lithium nickel-cobalt manganate material, the ternary lithium nickel-cobalt manganate material is a composite material of an aggregate material and a quasi-monocrystalline material, and the median particle diameter of the aggregate material is smaller than the median particle diameter of the quasi-monocrystalline material; the negative plate comprises a carbonmaterial, the carbon material comprises synthetic graphite and natural graphite, and the synthetic graphite and the natural graphite are both carbon-coated secondary particles; and the electrolytic solution comprises a solvent, lithium salt and an additive, the solvent comprises EC, DEC, EMC and an auxiliary solvent, the solvent is a quaternary or above compound, the lithium salt comprises LiPF<6>, LiFSI and LiPO<2>F<2>, and the additive comprises VEC, DTD and GBL. The low-temperature lithium-ion battery has good charge/discharge properties, high safety and high energy density under low temperature and can be well suitable for a low-temperature environment.