Aerosol generating device

An aerosol generating device configured to generate aerosol by accommodating a cigarette and heating the cigarette includes: a heater configured to heat the cigarette; wherein the heater is arranged in the shell; a hollow protruding pipe protruding from the housing, surrounding the heater, and including an opening open to the outside; an accommodating portion including an accommodating passage capable of accommodating a cigarette and capable of being inserted into or separated from the protruding tube; and a cover connected to an upper end of the accommodating passage of the accommodating portion, including an external hole into which the cigarette is inserted and exposed to the outside, and integrally coupled with the accommodating portion such that the cover is attached to and separatedfrom the case together with the accommodating portion, in which the cigarette is accommodated in the accommodating portion in a case where the external hole of the cover is opened toward the outside,the receptacle, the lid, a