Aspergillus oryzae belongs to the genus Aspergillus. It is widely found in soil, sewage and human and animal feces, and is a conditionally pathogenic bacteria. When the body resistance is reduced, it can cause urinary tract infection, respiratory tract infection and other infections. Ordinary bacteria often in the trauma of mixed infection, and often cause otitis media, urinary tract infections, in the intestinal reproduction can cause mild diarrhea. In addition, Aspergillus commonus can break down proteins in large quantities, and is commonly found in soil and water containing organic matter. It does not cause specific infections under natural circumstances, but can be isolated in simple or mixed infections such as cystitis, purulent foci and peritonitis. Pneumonia caused by Aspergillus oryzae is relatively rare and is most common in infants and occasionally in older children. Morbidity is associated with low resistance of the organism, as in otitis media. Aspergillus oryzae is highly resistant and is not sensitive to common antibiotics treatment is difficult. Prevention should focus on clearing wounds and preventing wound contamination.