The invention discloses a household five-balance fresh air air conditioner unit, which includes a box-type casing and divides the box-type casing into an upper air loop and a lower water loop. The air loop includes a fresh air outlet, a return air outlet, Air supply outlet, filter section, fan section, heating and cooling section, humidification section, oxygen production and carbon dioxide adsorption module, first electric air outlet, second electric air outlet and air passage, the water loop includes a water separator and a water collector , heat exchanger, first electric water valve, second electric water valve. At the same time, the invention also discloses a control method of a household five-balance fresh air air conditioning unit. Guarantee the five balance requirements of the air, process the air with the minimum energy consumption, and achieve the purpose of energy saving at the same time; one unit integrates ventilation, air conditioning, and heating into one, realizing simplification of construction and installation, and simplification of operation and adjustment.