The present invention relates to a functional air freshener composition. More specifically, the present invention relates to an air freshener composition which has a good odor whose volatilization strength lasts uniformly for a long time, and functions as aromatherapy as well as air purification, and to an air freshener comprising the same. The composition includes, based on 100 parts by weight of dipropylene glycol monomethyl ether, 5 to 20 parts by weight of isooctane, 1 to 5 parts by weight of emulsifier, 0.1 to 20 parts by weight of essential oil and 0.1 to 4 parts by weight of hyperbranched bis-MPA polyester-16-hydroxyl.본 발명은 기능성 방향제 조성물에 관한 것으로, 보다 상세하게는 우수한 향취와 이의 휘산 강도가 장기간 균일하게 지속되고, 공기 정화는 물론 아로마 테라피로서의 기능을 수행하는 방향제 조성물 및 이를 포함하는 방향제에 관한 것이다.