The symptoms of red spots on the foreskin are considered to be caused by local infection, which may be caused by your own lack of attention to personal hygiene. It is advisable to pay attention to personal hygiene and to change the underwear you have worn and to expose them to the sun. You can use 1:5000 potassium permanganate powder for external washing, together with erythromycin ointment or compound mupirocin ointment for external use. The normal course of the disease may take 5-7 days. It is best not to have intercourse during the treatment period, because intercourse will aggravate the local symptoms and is also easily infected to one’s sexual partner. During the treatment period, it is best to eat a light diet, do not eat spicy and irritating food and cold food. If there is circumcision, it is recommended that after complete recovery, you can go to the hospital and choose to do circumcision, which can solve the problem of local infection from the root.