Scrotal eczema is a subtype of eczema, also known as "hydrangea wind" and "cell leakage sore". It is an allergic skin disease caused by internal and external factors. Scrotal eczema is generally divided into acute, subacute, chronic, etc. Scrotal eczema is the most common male skin disease in Lingnan area in summer. Because the scrotal epidermis has small red bumps and it is extremely itchy, scratching and scratching may cause exudation and even infection. The high-risk groups are: taxi drivers, truck drivers, construction workers, outdoor workers, chefs, etc. who are in a high-temperature working environment for a long time. Due to poor heat dissipation in the perineum, it is more likely to cause scrotal eczema.