If itching occurs after intercourse, it is clinically recommended that mometasone ointment or parexone ointment be applied to the local area, which can have a rapid effect on itching. However, it is important to understand what causes the itchy coitus, if the itchy coitus occurs occasionally, it is often caused by localized inflammation of the vagina. It is recommended to do routine laboratory tests, according to the infected pathogens and timely use of drugs to give treatment. If itching occurs every time after intercourse, it is likely to be caused by sperm allergy. It is recommended to use a condom, so that the semen will not come into contact with the vaginal mucosa, and will not cause itching.