The utility model relates to a structure of a plant protective cover.The utility model comprises the following steps: a basin body is formed with a bottom plate；And a wall plate is arranged by extending the periphery of the bottom plate upward.And a ring is formed at the place where the wall plate is far away from the bottom plate.A cover body forms a ring at the edge of the opening.Let the lid cover the ring of the basin with a ring.At least one ventilating part is formed on the surface of the cover body.And a group of holes are arranged in the center of the ventilation part.And the ventilating part is additionally provided with a plurality of first perforations.At least one turntable is provided with a recessed column in the middle.And the turntable is rotatably inserted in the group setting hole of the cover body with the embedded column.And the rotary table is provided with a plurality of second through holes in cooperation with the first through holes.That is to say, the turntable can be rotated so that the first through hole is facing the second through hole to form a conduction and ventilation effect.一種植物保護罩之結構，其包括有：一盆體形成有一底板，並由該底板的周緣向上延伸圍設有一壁板，而該壁板遠離該底板處形成有一環圈，一蓋體於開口邊緣形成有一環部，讓蓋體能以環部蓋合於該盆體的環圈處，又該蓋體表面形成有至少一透氣部，並於透氣部中央開設有一組設孔，又該透氣部另開設有複數個第一透孔，至少一轉盤於中間凸設有一嵌合柱，且該轉盤以嵌合柱可旋轉的插設於該蓋體之組設孔，又該轉盤配合該第一透孔開設有複數個第二透孔，即能旋轉轉盤讓第一透孔正對第二透孔而形成導通透氣效果。
