The invention provides a standard charging curve and a charging method. The charging curve comprises a pre-charging stage, a first constant current charging stage, a second constant current charging stage, a constant voltage and current limiting charging stage, a trickle voltage limiting charging stage and a float charging stage. The storage batteries and the storage battery pack are charged basedon the charging curve. According to the charging curve and the charging method, the charging process can be more elaborately and comprehensively controlled, the storage batteries are ensured not to have undercharging or overcharging in the full life cycle and the service life of the storage batteries can be effectively prolonged.