Men need to be cleaned every day, because skin scales are produced every day. Generally speaking, for normal men, push the foreskin upward and wash it with warm water. After each nocturnal emission, not only underwear should be changed, but also genitals should be cleaned in time, because semen is the best bacterial culture medium.

Tips:

(1) Wear cotton shorts instead of tight-fitting, sweat-absorbent, airtight chemical fiber underwear. Change underwear every day.

(2) Male foreskin is too long, so circumcision should be performed. Before sexual intercourse, clean the genitals, especially the dirt on the inside of the foreskin and the coronary sulcus.

(3) As long as both men and women find erythema, nodules, hyperplasia, ulcers and exudation in the external genitalia, they should go to the hospital immediately for treatment.

(4) Both men and women should be single-minded in love and never engage in extramarital affairs or extramarital sexual relations, which is the most reliable measure to prevent sexually transmitted diseases.