The invention relates to the field of battery detection, and discloses a battery health state detection method. The method is characterized in that the method comprises the steps: measuring a voltage value U1 and a charging current I of a battery when the battery is in a state of charging; switching the charging state of the battery to a switching-off state, and measuring a voltage value U2 of the battery after switching-off; determining the internal resistance value Rn of the battery according to the difference between the voltage value U1 and the voltage value U2 and the charging current I; comparing the internal resistance Rn with an internal resistance-health state corresponding table provided by a battery manufacturer, and determining the corresponding health state of the battery.