The present invention relates to a trash can having an airtight structure capable of preventing odors or odors from leaking out by using the airtight structure of the trash can, and a lid is provided on the top of the trash can main body provided with an accommodation space to contain trash. , In a trash bin in which a lid is provided with a lid so that the accommodation space is exposed to the outside while the lid is erected, or the lid is rotated to cut off the accommodation space from the outside, A first blocking member is mounted on the lower side of the lid to block the gap between the corresponding rims, and a seating portion is formed at the top of the lid, and the lid and the cover correspond to each other in opposition to the seating portion. The second blocking member is mounted on the lower side of the cover to block the gap between the rims to have a double sealing structure.