Low-airflow-disturbance garbage can capable of automatically opening cover

The garbage can comprises a can body, the rear end of the can body is higher than the front end of the can body, and a winding drum is arranged at the top of the rear end of the can body. Opposite sliding grooves are formed in the top of the can body, the front portions of the sliding grooves are low, and the rear portions of the sliding grooves are high. A steel sliding shaft is connected into the sliding groove in a sliding manner; a flexible barrel cover is fixedly connected to the middle of the sliding shaft, and the rear end of the flexible barrel cover is wound on the winding drum; a left pull rope and a right pull rope are wound on a central shaft of the winding drum and are respectively connected with a driving mechanism; the driving mechanism comprises a treading device which is arranged on the ground in front of the can body and is adjacent to the can body. When the can cover is opened, air in the can cannot be sucked, airflow disturbance is greatly reduced, peculiar smells in the garbage can are pr