The scrotum wet cold may be caused by physiological factors, but also does not exclude the spermatic varicose veins, scrotal eczema and other pathological factors. 1. Physiological factors: if you work for a long time sitting or standing, and the surrounding environment is relatively high temperature, underwear is not breathable, etc., it may lead to the scrotum in a long time in a high temperature environment, causing the secretion of sweat can not be wiped out in a timely manner, so there are scrotal moist symptoms. 2. Varicose veins: usually due to the reduction of elastic fibers in the vein wall and congenital dysplasia of the vein wall, resulting in increased venous pressure and varicose veins; clinically, it is mainly manifested in the increased size of the scrotum on the affected side, swelling, pain and other discomforts, and there may be scrotal wetness and coldness. 3. Scrotal eczema: mainly due to long-term mental tension, emotional fluctuations, excessive fatigue, excessive sweating and other factors, resulting in scrotal skin itching, swelling, redness, vesicles and other discomforts, can also cause scrotal wet and cold conditions. Scrotal wet and cold may also be caused by other factors, it is recommended that patients go to the regular hospital to consult the urology department in a timely manner, under the guidance of the doctor to clarify the cause of the disease after treatment, and strive for early recovery.