Painful urination after coitus may be caused by urinary tract infection, but urinary tract infection usually has frequent urination, urgent urination, painful urination and incomplete urination. In addition, if the man moves roughly during intercourse, it may also damage the vulva or urethra, which may also cause pain when urinating, or even blood in the urine. If it is convenient, it is best to come to the hospital to do specialist examination and urine routine examination, if it is not convenient to come to the hospital, you can also empirical medication, oral levofloxacin capsule and hot shower Qing granules. Usually drink more water, pay attention to the hygiene of the vulva, you can use potassium permanganate tablets in water to sit in the bath, or use cleaner, gynecological cleaning and other cleaning of the vulva, pay attention to change and wash the underwear every day, to wear cotton pants, do not wear tight pants.