A urine pH of 5.0 is acid urine. Acid urine must be combined with the urine routine to find whether there is proteinuria, whether there are red blood cells, white blood cells and so on to make a comprehensive assessment. Acid urine should be considered whether there is the presence of urinary tract tuberculosis, it is recommended that patients do antacid staining in the urine sediment, it is generally recommended to take the first urine in the early morning to do urinalysis, so that the test has the highest positive rate, generally should be examined for three consecutive times. Antacid bacilli may also be found if the patient has a lot of circumcision. It is recommended to do urinary tuberculosis mycobacterium culture, this culture time is longer, if found with urinary tuberculosis mycobacterium can be determined to be urinary system tuberculosis.