The 25-year-old man feels that the scrotum has a moist feeling all year round, mainly considered with the bad life habits, reproductive system diseases, skin diseases and other factors. 1. bad habits: such as long-term sedentary, continue to be in a high temperature environment, or often wear some close-fitting tight underwear, are not conducive to local heat dissipation, which in turn triggered the phenomenon of scrotal humidity. 2. Reproductive system diseases: such as prostatitis, seminal vesicle adenitis and other diseases, will lead to prostate, seminal vesicle glands and other organs of congestion, edema, affecting the affected area of the blood circulation, and then the symptoms of scrotal humidity. 3. Skin diseases: In addition, scrotal dampness may also be related to other diseases such as eczema. It is recommended that male patients should consult a doctor in time to confirm the diagnosis, and follow the doctor’s instructions to carry out the corresponding treatment.