The invention discloses an unbalanced battery pack charging method considering a temperature. The unbalanced battery pack charging method comprises a battery parameter acquisition and battery temperature estimation part and an unbalanced series battery pack charging control method part considering battery temperature change. Battery characteristic parameter information is obtained by monomer characteristic test, the temperature of each single battery is calculated iteratively by combining the obtained characteristic value and a battery thermal model, a charging current is adjusted according toresidual electric quantity state of each monomer in a battery pack and a battery temperature state estimation result, so that excessively large temperature difference of the monomer of the battery pack or excessively high monomer battery is prevented. The unbalanced battery pack charging method is suitably used for charging application of a series battery pack of an electric vehicle, an energy storage system and the like.