The present invention relates to a fragrance diffuser. The present invention comprises: a fan cover (10) which enables an air blowing fan (11) to be settled in and is installed to be open upwards; a main body (20) which has the upper part of the air blowing fan (11) of the fan cover (10) which is fixated on the bottom and protrudes upwards at a fixed diameter and height, enables wind to flow from the air blowing fan (11) in order to smoothly move upwards by forming multiple air blowing holes (25) in an upper surface (24), has a plug (26) in one side, and forms an operation switch (27) in the other side; a box accommodating container (30) which settles a lower end part in the center of the upper surface (24) of the main body in order to be separable, enables a fragrance box (31) which accommodates gel or liquid fragrance inside to be inserted, and has an upper surface to be combined with a cap (32) in order to be able to open and close; a notification part (40) which notifies time for replacing or charging fragrance by turning on an LED lamp (47) which is installed in both sides of the fragrance box (31) if the capacity of fragrance which fills the fragrance box (31) decreases under a predetermined level in the center of the upper surface (24) of the main body (20); and a protective cover (50) which has a predetermined height and a diameter which surrounds the outer circumference surface of the protrusion part (23) of the main body (20), accommodates the box accommodating container (30) inside, and forms multiple discharge holes (51) which enables fragrance to be diffused by passing the upper part.본 발명은 방향제 확산장치에 관한 것으로서, 송풍팬(11)이 안치되도록 하고, 상향 개방되게 구비되는 팬커버(10); 바닥면에는 고정된 상기 팬커버(10)의 상기 송풍팬(11) 상부가 일정 직경과 높이로 상향 돌출되게 하면서 상부면(24)에는 복수의 송풍홀(25)이 형성되도록 하여 상기 송풍팬(11)으로부터 불어오는 바람을 원활하게 상향 유동시킬 수 있도록 하며, 일측에는 플러그(26)를 구비하고, 타측에는 동작 스위치(27)를 형성하는 메인 바디(20); 상기 메인 바디(20)의 상부면(24) 중앙에는 하단부가 분리 가능하게 마춤 안치되며, 내부에는 겔 또는 액상의 방향제가 수용되는 방향제함(31)이 삽입되도록 하고, 상부면은 개폐가 가능하도록 캡(32)이 결합되