The present invention relates to a cigarette substituting device, and more specifically, to a cigarette substituting device which satisfies inhalation needs of a user using scent molecules of various natural oils that are useful to the human body and have appropriate stimuli and flavors, which is capable of further increasing preferences by improving the structure of a cartridge containing the scent molecules, thereby improving scent releasing power and hitting sense due to efficient air movements, and which finally promotes effects of smoking cessation. A cigarette substituting device according to the present invention includes: a pipe-shaped housing (1) which has a predetermined length a scent releasing cartridge (2) which is detachably inserted into the housing, and which has a scent releasing unit (20) and an inhalation pipe (3) which is coupled to one end of the housing, and which inhales scent from the scent releasing cartridge. The scent releasing unit includes: a fiber rod (21) which contains natural oil scents a mounting part (22) which is formed in a round shape such that the fiber rod is mounted on the mounting part and a guide groove part (23) which includes a first guide groove part that is formed in a spiral shape on the mounting part to increase scent releasing power of natural oils impregnated in the fiber rod by rotating external air flown into the scent releasing cartridge.COPYRIGHT KIPO 2016본 발명은 담배 대용 기구에 관한 것으로서, 보다 구체적으로는 인체에 유용하고 적절한 자극과 향미를 지닌 각종 천연오일의 향 분자를 이용하여 사용자의 흡입에 대한 욕구를 충족함과 아울러 상기 향 분자를 담는 카트리지의 구성을 개선하여 효율적인 공기이동에 의해 발향력 및 타격감을 향상함으로써 기호도를 더욱 높일 수 있으며, 최종적으로는 금연의 효과를 도모하도록 하는 담배 대용 기구에 관한 것이다.