The invention proposes a control method for an energy storage battery system in a micro-grid, and the method comprises the following steps: 1) establishing a micro-grid system and configuring the control parameters for the energy storage battery and the loads connected therewith through connection lines; 2) measuring the SOC of the energy storage battery and calculating the power difference between the load's active power and the maximum power generation active power of an intermittent power source; 3) if the power difference between the load's active power and the maximum power generation active power of the intermittent power source is above zero, determining that the energy storage battery is working in a power discharging mode; if the power difference between the load's active power and the maximum power generation active power of the intermittent power source is below zero, then determining that the energy storage battery is working in a power charging mode; and according to the SOC of the energy storage battery, selecting the charging phase of the energy storage battery; and 4) based on the control mode in the power discharging state of the energy storage battery, selecting the control mode of the intermittent power source. The method of the invention is capable of effectively extending the power charging service time of an energy storage battery, and increases the energy utilization efficiency for intermittent sources and the power charging stability for the battery.