The invention provides a combination system of a building power-saving facility and a storage battery. The combination system comprises a building, a building energy-saving control cloud platform, an energy-saving power consumption device, an electrical storage device (7) and / or a charging wall (8); the energy-saving power consumption device comprises at least one of an LED lamp (1), a variable frequency fan (2), a variable frequency water pump (3), a variable frequency refrigerator (4), an energy-saving electric kitchen ware (5), an energy-saving electric steam boiler (6), an energy-saving elevator (9) and a variable frequency air conditioner (10). According to the combination system, the power quantity saved by energy-saving measures in different buildings is stored in the charging wall and the storage battery, the power charging and storing time is selected in the off-peak power period at night, in the power use peak period of the daytime, energy-saving power consumption facilities can be supplied with power through a storage battery and the charging wall, since the power-saving facilities consume less power than before, in addition, part of power is supplied by the power charging and storing facilities, so that the power consumption quantity obtained from the power system practically is much lower in the power use peak period, and the power consumption fee paid to the power system can be reduced greatly.