The average male scrotum is normally black or dark red in color. The scrotum is an external genital organ of the male, which encloses the testicles, epididymis and other internal genital organs. The surface of the scrotum has a lot of folds and is pigmented, which makes it darker in color, often appearing dark red or black. The surface of the scrotum is usually free of abnormal objects except for a small amount of pubic hair. The scrotum has no odor, no rupture, pus, redness, swelling, heat and pain. If the scrotum has obvious sudden change of color, pain, itching, swelling, and a sensation of falling, etc., all of them may be indicative of the production of some diseases, such as scrotal eczema, testicular syringomyelia, varicocele, and so on. If patients have symptoms of scrotal discomfort, they should seek medical treatment in time. Daily attention should be paid to local cleanliness and hygiene, keep the scrotum area dry.