Male scrotal dermatitis has more causes, usually caused by scrotal eczema, riboflavin deficiency or scabies. To go to the hospital in a timely manner to clarify the cause of the disease and targeted medication, the treatment mainly includes anti-allergy treatment, vitamin supplements and insecticidal treatment. 1. Scrotal eczema: it is caused by allergies, manifested as scrotal skin roughness and hypertrophy, surface peeling and itching. Treatment can be external tacrolimus ointment, zinc oxide ointment and other hormone-free ointment, or oral loratadine tablets, ebastine tablets and other anti-allergy drugs. 2. Riboflavin deficiency: it is caused by the lack of vitamin B2. The performance of the scrotum skin rough and hard, often no obvious self-conscious symptoms, mostly accompanied by dry and cracked corners of the mouth, tongue redness, deepening lines and other symptoms. Oral vitamin B2 tablets or B vitamins can be treated. 3. Scabies: It is caused by scabies infection, transmitted through skin contact. The performance of the scrotum skin with more pimples, pimples itching intense, aggravated at night. Can be used externally with clove basil oil cream, sulfur ointment and other drugs. It is recommended that patients with scrotal dermatitis go to the hospital in a timely manner, after the cause of the disease is clear, standardized treatment under the guidance of the doctor, the use of drugs need to follow the doctor’s instructions, to avoid self-medication.