The utility model relates to a whole no insect pest can be realized to edible mushroom cultivation case, especially protection against insects pocket cover on the salient ridge. The cover bag is sent to double -layered inslot without the rubber band with a stainless steel round section of thick bamboo to asparagus cover bag, extracts a stainless steel round section of thick bamboo, and the cover bag is being pressed from both sides the inslot by clamp firmly. Once dragging when visiting the mushroom and getting set bag. Cover plastics cup, the macrostoma can according to advancing double -layered inslot. A glass interior carbon dioxide concentration can be regulated and control to the bottom of cup. Its structure is: box periphery all around is equipped with the protrusion cover ridge, is covered with the size in the circle of the ridge and goes out the mushroom mouth. The periphery that goes out the mushroom mouth greatly is equipped with set sackholder groove. Its advantage is that the protection against insects is effectual, asparagus cover bag, retainer cup are swift, gets set bag, the retainer cup is faster. Box simple structure, practicality, in order to promote.