The foreskin is a relatively secret position for men. There is a small pimple on the foreskin, and it is necessary to find out the nature of the pimple to determine the treatment. The main factors causing acne on foreskin are as follows: 1. It may be caused by fat particles. The skin on the foreskin is thin and prone to fat particles. There will be something similar to white spots at the top, and fat particles do not need special treatment. Second, a knot in one's heart is irregular, a bit like cauliflower, and unclean sexual life may be caused by condyloma acuminatum. Be sure to go to the hospital in time for laser resection and antiviral treatment with interferon; Third, the pimple on the foreskin has obvious itching and pain symptoms. Usually I don't pay much attention to the cleanliness of genitals. At the same time, there is also a problem that the foreskin is too long, which may be caused by balanitis. Anti-inflammatory treatment is needed, and different acne treatment methods are different.