Red bumps on the scrotum may be caused by causes such as scrotal eczema or scrotal inflammation. Depending on the cause, it can be treated with medications such as hydrocortisone butyrate ointment and erythromycin ointment under the guidance of a doctor. 1. Scrotal eczema: scrotal eczema refers to the appearance of eczema on the scrotum, eczema is mainly refers to the growth of small pimples, small blisters on the scrotum of the size of millet, and accompanied by intense itching, redness and swelling, etc.; the patient can be used under the guidance of the doctor hydrocortisone butyrate ointment, benzydamine and other drugs, allergy is prohibited. 2. Scrotal inflammation: scrotal inflammation usually refers to the scrotum skin or subcutaneous bacterial infection caused by the general rash, blisters accompanied by redness, swelling, pain and other symptoms of the scrotum, the patient can be under the guidance of a doctor to use erythromycin ointment, amoxicillin and other drugs for anti-inflammatory treatment, and to improve the local symptoms. It may also be caused by folliculitis, warts and other reasons, patients should go to the hospital for examination in a timely manner, under the guidance of the doctor for treatment. All of the above drugs should be applied under the guidance of a doctor.