[Problem] To provide a fungus cultivation bag that can more effectively prevent or suppress infiltration of various bacteria. [Solution] Provided is a fungus cultivation bag that is a bag body having a cultivation medium disposed thereinside and is used to cultivate fungi in the cultivation medium inside the bag body, wherein the fungus cultivation bag is characterized in that: (1) the fungus cultivation bag has a ventilation hole in at least one place in the bag body and the ventilation hole is covered by a water repellent non-woven fabric (2) hydrophobic oxide fine particles are adhered to fibers that constitute a non-woven fabric that serves as a base material of the water repellent non-woven fabric (3) the angle of contact between the surface of the water repellent non-woven fabric and water is at least 140° (4) the non-woven fabric serving as the base material has a thickness of 60-500 μm and a basis weight of 30-200 g/m2 and (5) the hydrophobic oxide fine particles have an average particle diameter of 5-10 nm, and a value [B/A], which is obtained by dividing an adhesion amount B (g/m2) of the hydrophobic oxide fine particles by a basis weight A (g/m2) of the non-woven fabric serving as the base material, is 0.1-20%.Le problème décrit par la présente invention vise à fournir un sac de culture de champignons, qui peut prévenir ou supprimer plus efficacement linfiltration de diverses bactéries. La solution décrit par linvention concerne un sac de culture de champignons, qui est un corps de sac ayant un milieu de culture disposé à lintérieur et est utilisé pour cultiver des champignons dans le milieu de culture à lintérieur du corps de sac, le sac de culture de champignons étant caractérisé en ce que : (1) le sac de culture de champignons a un trou de ventilation à au moins un emplacement dans le corps de sac et le trou de ventilation est recouvert dun non-tissé hydrofuge (2) des particules fines doxyde hydrophobe adhèrent aux fibres qui constituent un non-tissé q
