The invention relates to an aluminum air fuel cell system, and particularly relates to the aluminum air fuel cell system with a temperature control system, a hydrogen discharging system and a filtration system and having a circulating electrolyte. The system includes an electrolyte tank, a cell stack and a ventilation system; also includes an electrolyte supplied system, an electrolyte return system, the hydrogen discharging system, a temperature measurement system, the filtration system and a heat dissipation system. The system can realize circulation of the electrolyte, effectively separates precipitation, controls a hydrogen content and an internal temperature of cells, meets requirements of high power output and long time running, and can be widely applied to the field of power cells for electric vehicles and large standby power supplies.