The invention provides a rotary-cover trash can, which relates to the technical field of a trash can, and is used for solving the problem that garbage easily generates peculiar smell due to piling-up for long term, and solving the problem that the garbage is inconvenient to throw. The rotary-cover trash can provided by the invention comprises an internal barrel and an external barrel which are respectively arranged outside and inside, wherein clearance is arranged between the internal barrel and the external barrel; the external net of the internal barrel is grid-like; air holes are formed in the external barrel; therefore the ventilation of the garbage in the internal barrel is facilitated, so that the mouldiness and smelliness, caused by long-term piling-up, of the garbage are avoided; an upper cover is arranged on the upper part of the external barrel in a hinging mode; the upper cover is obliquely arranged; the internal cover is arranged in the upper cover in a hinging mode; the garbage thrown on the upper cover is pressed on the internal cover; when reaching a certain weight, the garbage presses the large end of the internal cover to rotate, so that the garbage falls into the internal barrel. By applying the rotary-cover trash can, the mouldiness and smelliness caused by long-term piling-up of the garbage can be avoided; the ventilation is good; the garbage throwing is facilitated; the garbage thrown on the cover of the trash can can fall into the internal barrel.