The invention relates to a winding lithium ion battery which comprises a roll core, wherein the roll core is formed by winding a positive plate, a negative plate and a diaphragm which are stacked from outside to inside; the diaphragm is spaced between the positive plate and the negative plate; at least two positive pole lugs are fixed on the positive plate, and extend outside the first end of the roll core; the at least two positive pole lugs which extend outside the first end are mutually discrete; all the positive pole lugs are fixedly connected with a positive column fixed at the first end of the roll core; at least negative pole lugs are fixed on the negative plate, and extend outside the second end of the roll core; the at least two negative pole lugs which extend outside the second end are mutually discrete; and all the negative pole lugs are fixedly connected with a negative column fixed at the second end of the roll core. After the technical scheme is adopted, the heat dissipation performance of the battery can be better improved, so that the safety is improved.