Scrotal dampness is mainly related to scrotal dermatitis, scrotal eczema, varicocele and other diseases. 1. Scrotal dermatitis: the etiology may be related to local bacterial infection. The patient’s local skin in the bacterial and inflammatory secretion stimulation may appear itching, flaking, pimples and other symptoms, can also be due to the erosion of oozing and scrotal moist phenomenon. 2. Scrotal eczema: the cause of the disease is not clear, may be related to abnormal immune function, heredity, excessive scratching. Typical symptoms of patients include itching, thickening of infiltration, mossy changes, etc., and scrotal dampness due to localized oozing. 3. Varicocele: the disease can also cause scrotal moisture in some men. Currently, the cause of varicocele may be related to venous valve insufficiency, venous return obstruction, etc. The disease is easy to cause the patient’s scrotum to increase in size, but also easy to be accompanied by a feeling of swelling, hidden pain. In addition to the above diseases, the intake of spicy and irritating food, wearing tight or chemical fiber underwear, strenuous exercise, long-term exposure to high temperature and humid environment, etc., can cause scrotal moisture. It is recommended to consult a doctor in time for examination in order to clarify the cause of the disease and then follow the doctor’s instructions for treatment.