The most common cause of itching inside the foreskin is glansitis, which is mostly seen in patients with long foreskin or circumcision. Because the foreskin cavity can secrete foreskin scale, patients who are circumcised and circumcised will have increased secretion of his foreskin scale, which repeatedly irritates the glans and foreskin, leading to glansitis. In the clinic, the most common is caused by fungal infection, also known as Candida glansitis, mostly seen in circumcision, circumcision, and a history of unclean sexual intercourse. The foreskin and glans of the penis are flushed, and there can be white cheese-like discharge from the inner plate of the foreskin and the coronal groove of the glans, which can be prickly and itchy. There are light red papules of varying sizes on the glans, and there will be a local burning sensation itching, etc. In this case, you can often turn up the foreskin and wash it, using potassium permanganate solution and iodophor solution, and wipe it once in the morning and once in the evening. In addition, repeated attacks, you can do a circumcision.