The diagnosis of urinary tract infection is confirmed from the following two aspects: 1. clinical manifestations, urinary tract infection is manifested by bladder irritation symptoms such as urinary urgency, frequency and painful urination, which are very common typical symptoms. 2. laboratory tests, urine routine can be performed, urine routine in most cases there is a significant increase in white blood cell count, some can appear red blood cells occult blood. So when you suspect a urinary tract infection, you can ask for a medical history to see if there are symptoms such as urinary urgency, frequency and painful urination. Then you can have the patient undergo a routine urine test, which in most cases can confirm the diagnosis.