Provided is a cosmetic container having an air entrance/exit unit, in which an outer container lid is opened/closed in an outer container, and a cosmetic container in which a sealing lid is opened/closed is coupled to an inside of the outer container, wherein an air entrance/exit unit is installed in a rectangular hole formed at a portion of an outer wall of the cosmetic container, and the air entrance/exit unit includes a stopping protrusion protruding from an outer periphery of a hinge piece of the outer container lid, a rectangular rubber member inserted into the rectangular hole of the cosmetic container, and an air entrance/exit member inserted into a central hole of the rectangular rubber member.