Breathable heat preservation dish cover

The utility model relates to the technical field of dish covers, in particular to a breathable heat preservation dish cover, which comprises a cover body and a cover opening arranged at the bottom of the cover body, and is characterized by further comprising an upper cover positioned at the top of the cover body, the upper cover is matched with the cover body in a relatively rotating manner, a cover hole penetrating through the inside and the outside of the cover body is arranged on the cover body, and a cover hole penetrating through the inside and the outside of the upper cover is arranged on the upper cover. When the upper cover and the cover body relatively rotate to a ventilation position, the cover hole is communicated with the cover hole; and when the upper cover and the cover body relatively rotate to a heat preservation position, the cover hole is not communicated with the cover hole. An upper cover is arranged at the top of a cover body, the upper cover and the cover body are matched in a relative r