Dry skin on the surface of the scrotum may be underwear discomfort, scrotal eczema, mold infection and other reasons, need to be specifically analyzed. 1. Underwear discomfort: If the underwear material is rough or the underwear is too small, it is easy to cause localized wear and tear of the scrotum, making it appear dry and skinny. 2. Scrotal eczema: If there is more sweating in the scrotum, it may cause localized eczema, and when the eczema is about to be healed, the epidermis is peeled off, which will be manifested as peeling. 3. Mold infection: If the scrotum is infected by mold, it will produce skin irritation, so that the skin at the scrotum will appear moss-like changes, and there will be dry flaking. When the symptoms of dry skinning on the surface of the scrotum persist and cannot be relieved, there may also be other reasons, attention to timely access to the hospital, under the guidance of the doctor for treatment, to promote symptomatic relief.