The present invention relates to an air shower gate and, more specifically, to an air shower gate installed at an indoor/outdoor entrance/exit so as to remove microdust, hazardous materials, and odor from people entering/exiting same, and configured to monitor the quality of indoor/outdoor air such that, through air purification or ventilation, a comfortable and clean indoor environment can be maintained and managed. An air shower gate according to the present invention has the following advantages: Dust and the like gathered on clothes during outdoor activities can be removed, and indoor and outdoor spaces are separated by an air curtain, thereby enabling the user to move in/out conveniently without having to open/close a door. Inflow of dust into the indoor space is prevented by the air curtain, and indoor air is filtered to perform an air purifying function. Outdoor air is filtered and then introduced into the indoor space according to sensor information, thereby ventilating same. Air is adaptively sprayed to the user's body part according to the sensor information such that the user's hair is not blown. The side ejection angle slopes downward such that garments such as skirts are not blown upward/downward. The user's information may be received from a wireless terminal, such as a smartphone, such that air is ejected in a manner preferred by each user.La présente invention concerne une porte de douche à air et, plus spécifiquement, une porte de douche à air installée au niveau d'une entrée/sortie intérieure/extérieure de façon à éliminer la micro-poussière, les matières dangereuses et une odeur provenant de personnes entrant dans celle-ci/sortant de celle-ci, et conçue pour surveiller la qualité de l'air intérieur/extérieur de telle sorte que, par purification ou ventilation d'air, un environnement intérieur confortable et propre puisse être maintenu et géré. Une porte de douche à air selon la présente invention présente les avantages suivants : la poussière et a