If the foreskin glans is red, swollen and itchy, then it may suffer from glansitis of the foreskin, which can be caused by long-term chronic stimulation of foreskin scale, urine scale, etc., and also by infections such as bacteria, fungi and trichomonas. Anti-infection treatment, cleansing treatment and elective circumcision are needed to prevent recurrence; 2. It can also be a local infection caused by contact with bacteria, fungi, trichomonas, etc. Local redness and swelling can be seen, accompanied by erythema and urinary tract irritation symptoms, etc. It is necessary to use the appropriate medication according to the type of infection and to perform circumcision at a later stage to prevent its recurrence.