Embodiments of the present application provide a charging control method and a charging control apparatus of a lithium-ion battery. The charging control method includes: performing charging control on the lithium-ion battery for the i th time, so that a battery capacity value of the lithium-ion battery at a target charging cut-off voltage is 0.95C 0 to 1.05C 0 , where C 0 is a nominal capacity of the lithium-ion battery, and the target charging cut-off voltage is less than or equal to the nominal voltage of the lithium-ion battery. The charging control method and the charging control apparatus according to the embodiments of the present application are beneficial to keeping the quantity of active lithium unchanged, thereby achieving the effect of automatically supplementing the battery capacity along with aging.