The invention discloses a domestic dustbin. The domestic dustbin comprises an outer dustbin, a cylindrical inner dustbin installed in the outer dustbin, and a dustbin cover arranged at the upper end of the outer dustbin. An arc-shaped rubbish throwing inlet is formed in the upper front portion of the dustbin cover. Baffle guide grooves are formed in the parts, located on the two sides of the rubbish throwing inlet, of the dustbin cover symmetrically. An elastic baffle used for blocking the rubbish throwing inlet is slidably installed between the two baffle guide grooves in the two sides. A pyroelectric sensor used for detecting whether a user gets close to the domestic dustbin is installed on the upper portion of the front side of the outer dustbin. Air exhaust barrels communicating with a filter installation cavity are connected to the lower end of the filter installation cavity. A fan is connected to the lower end of each air exhaust barrel. A lower support seat is connected to the lower end of the inner dustbin integrally. Air discharging barrels in seal insertion connection with the lower ends of the fans are formed at the upper end of the rear side of the lower support seat. When the pyroelectric sensor detects that the user gets close to the domestic dustbin, the fans work, then the elastic baffle moves downwards, thus the rubbish throwing inlet is opened, and in this way, the user does not smell the peculiar smell of rubbish in the rubbish throwing process.