Red dots on the vulva of a boy may be caused by allergies and tortoiseshell infections. 1. Allergy: the child’s penile skin contact with allergic substances or wearing special material underwear, may cause penile skin allergy symptoms, clinical manifestations of skin itching, erythema, pimples and so on. 2. Circumcision: The circumcision of children is more serious than that of adults, in which case it is easy to hide dirt and cause inflammation of the glans and the surrounding skin, which is usually related to bacterial, fungal and other infections, with clinical manifestations such as redness and swelling of the glans and the surrounding skin, itchiness, pain, etc. It is recommended that parents take their children to the hospital for clarification. Parents are advised to take their children to the hospital to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.