Protective shielding device and bathroom hood

The utility model relates to a protection shielding device and a bathroom hood, the protection shielding device comprises an upper butt joint unit, a lower butt joint unit and a protection unit, the upper butt joint unit is arranged above the hood and is respectively connected with the hood and a wall body at a mounting position; the lower butt-joint unit is arranged below the air cap, the lower butt-joint unit and the upper butt-joint unit are symmetrically arranged in the axial direction of the air cap, and the lower butt-joint unit is connected with the air cap and a wall at the installation position; the protection unit covers the air outlet of the air cap, is detachably connected with the upper butt joint unit and the lower butt joint unit and is used for protecting the outside of the air cap. The blast cap device has the advantages that the blast cap device is installed by using the upper butt joint unit and the lower butt joint unit, so that the blast cap device can be additionally provided with the pr