Scrotal dampness is a disease specific to men. The male scrotum has a certain contraction function and contains a large number of sweat glands, which can regulate the local temperature. For many reasons the sweat secreted from the scrotum cannot be distributed in time, the local temperature rises and sweat secretion increases, resulting in symptoms such as dampness and itching. Higher physiological sweating, prolonged sitting, working in a hot environment or wearing tighter underwear are important triggering factors. For example, drug allergies, vitamin deficiencies, and fungal growth can cause scrotal dampness to develop. Drug allergy is one of the most common causes of scrotal eczema. Itching is more severe than other parts of the body because the scrotum is in a humid environment and there is generalized itching after the development of drug allergy. Vitamin deficiencies, such as vitamin E or vitamin C, can cause itchy skin and scrotal dampness, so it is important to eat foods with high vitamin content. The male pubic area is not breathable, and the scrotum sweats more, so it is easy to have fungal growth, such as mold is the most common infection factors. The infection will result in a series of symptoms such as flaking of the scrotal skin, intense itching, redness and swelling. The factors that lead to scrotal dampness in men are many, so men should develop good habits, wear cotton breathable underwear, bathe regularly, change clothes regularly, disinfect household items with sunlight, do not drink alcohol and stay up late, try to avoid scrotal dampness.