The invention discloses an air shower with lower exhaust air. Fresh air is input all around and from an upper portion and output from a lower portion air treatment box, the interior of the air shower is under negative pressure in an air showering period, the air shower runs with all fresh air, and heat exchange of fresh air and exhaust air is realized; the lower exhaust air is adopted to guarantee a respiratory system to receive fresh air, and the air treatment box is arranged for the fresh air and the exhaust air, so that noise reduction is realized, input air quality is improved, noise in the air shower is lowered, and dust adsorption and sterilization performance of the air shower are improved; and heat exchange of the fresh air and the exhaust air can lower energy consumption loss and guarantee comfortable breathing of human body. The air shower with lower exhaust air can be widely applied to occasions using air showers, and is supportive of industrial, standardized, serialized and generalized production, small in investment, quick in effect gaining, high in heat utilization efficiency, and suitable for newly building and reconstruction of various clean air shower, and belongs to the field of cleaning and energy saving and emission reduction.