The invention relates to a mushroom cultivation space bag and its cover, which comprises a space bag body, a set of rings and a cover.The opening position of the space bag body is provided with a cover.The cover includes the following covers.A breathable film and a top cover,The lower cover has a ring wall on one side.One end of the side ring wall is formed into a closed surface.And a plurality of holes are arranged on the closed surface.And the lower cover is provided with a folding edge extending along the outer circumference of the side ring wall.The ventilating film cover is arranged on the top surface of the lower cover.And the circumference of the ventilating film is arranged along the outer circumference of the folding edge of the lower cover.The upper cover is sheathed on the outside of the breathable film.There is a hole in the center of the upper cover.And at least one notch is concave on the top surface,A ventilation space is formed between the folding edge of the lower cover and the side wall of the upper cover.The periphery of the ventilating film is arranged in the ventilating space；Thus, the space bag has the effect of avoiding dampness and increasing air permeability.本創作係一種培育菇類太空包及其封蓋，其係包含一太空包本體、一套環及一封蓋。太空包本體開口位置設有封蓋，封蓋包含一下蓋、一透氣薄膜及一上蓋，下蓋具有一側環壁，且側環壁之一端形成為一封閉面，且封閉面佈設有複數孔洞，而下蓋於沿側環壁外周延伸設有一折緣，透氣薄膜蓋設於下蓋頂面，且透氣薄膜周緣反折沿下蓋之折緣外周設置，上蓋套合於透氣薄膜之外周，而上蓋中央具有一開孔，且於頂面凹設有至少一缺口，下蓋之折緣與上蓋之側壁之間形成有一透氣空間，透氣薄膜周緣容置於透氣空間內；藉以提供太空包具有避免受潮及增加透氣之效果。
