The present invention relates to a vent device which has a simple structure, is easy to wash, and avoids generation of bubbles as much as possible in milk in a baby bottle in order to eliminate the vacuum inside the baby bottle. The vent device of the present invention has a simple structure, thereby can reduce manufacturing cost, is easy to wash, and is hygienic. In addition, the inside of a hole and a tube can be washed with a rod without the need of a separate cleaning brush.COPYRIGHT KIPO 2014본 발명은 유아용 젖병에 있어 젖병내부의 진공을 해소하기위한 구조가 간단하고 세척이 쉬우면서 젖병내의 우유에 최대한 공기버블이 발생하지 않게하여 아기가 섭취하도록 하는 통기 장치에 관한것이다.
