The vast majority of UTIs are caused by impure sexual intercourse, and pathogenic infections occur, when the corresponding UTI occurs. The most common clinical conditions include gonococcal urethritis and non-gonococcal urethritis, both of which can be contracted through sexual contact. This can be accompanied by frequent, urgent, and painful urination, with a large discharge from the urethra. The majority of the pathogens are gonococcus, mycoplasma, chlamydia, Escherichia coli, etc. It is necessary to go to the hospital for further culture of the relevant secretions and urine to clarify the pathogenic bacteria and then use targeted medication. During the treatment period or during the disease, sexual life should be abstained from, through sexual life can happen to have other patients infected phenomenon. After treatment, the patient’s symptoms will disappear completely, and the culture of urine routine or urethral swab will be negative before the state of cure can be achieved. The probability of having a UTI can be increased by impure sexual activity, too frequent sexual activity, or unprotected, unsafe activity.