The utility model discloses a family is with little grid system based on energy management of family, include: photovoltaic power, photovoltaic?inverter, energy memory, switch, one -way ammeter, two -way ammeter, commercial power electric wire netting, indoor transformer case, family's load and controller, photovoltaic power, photovoltaic?inverter, switch, one -way ammeter, two -way ammeter be the series connection in proper order, energy memory inserts between photovoltaic?inverter and the switch, the one end of two -way ammeter is connected to the commercial power electric wire netting, and the other end is connected with the family load through indoor transformer case, the controller includes the distributed power generation controller that is connected with photovoltaic?inverter and energy memory and family's load control ware of being connected with the family load. The coordinated control of electric energy and load can be realized according to power consumption state, photovoltaic power and the energy memory's of family's load in service behavior in the family through distributed power generation controller and family's load control ware with little grid system. Both guarantee the safe operation of electric wire netting, improved little grid system's the electrical efficiency of using again.