Abnormal results: Gram-negative bacteria: Neisseria gonorrhoeae, Escherichia coli, Proteus, Klebsiella pneumoniae, Enterobacter aerogenes, Salmonella, Pseudomonas aeruginosa and Serratia. Gram-positive bacteria: Staphylococcus aureus, Enterococcus, Group A Streptococcus, Saprophytic bacteria, Mycobacterium tuberculosis, etc. The colony count (GFU) of middle urine culture is 103- 104/ml, so urinary tract infection should be considered. If the number of colonies is >; 105/ml can be diagnosed as urinary tract infection; If Mycobacterium tuberculosis is isolated by culture, it can be diagnosed as urinary tuberculosis. People who need to be examined: people who have symptoms such as slight discomfort of scrotum or swelling pain and get better after rest.