The invention provides a method for controlling the heating of a battery and a device thereof. The method comprises the following steps of: starting to heat the battery when meeting the condition for starting to heat; and stopping heating the battery when meeting the condition for stopping heating the battery. The condition for stopping heating comprises one of the following conditions: the energy absorbed by the battery reaches an energy set valve; and the time for keeping the discharged electric current of the battery to be invariable reaches a setting time, or the discharged electric current is reduced; and the heating time reaches a maximum heating time. The method and the device improve the condition for stopping heating. Compared with the single temperature judging method for stopping heating in the prior art, the invention respectively considers more diversified factors such as the temperature, the discharged electric current, the heating time and the like, thereby being capable of meeting the requirement of the battery in the practical environment, not being capable of damaging the battery, and prolonging the service life of the battery.