Most of the scrotum emitting sperm smell is caused by moisture in the scrotum, which may be related to local airlessness, sweating, poor local hygiene, and may also be related to prostatitis, varicocele and other diseases. If you wear tight underwear, the weather is hot, in a humid, hot environment, the scrotum is easy to sweat. The smell of the sweat glands combined with the smell of sebaceous gland secretions can produce a semen-like odor. Chronic prostatitis can also lead to scrotal moisture and odor, which can be accompanied by frequent urination, urinary urgency, and dysuria. When varicocele is present, it can also lead to dampness and odor in the scrotum area, and there may also be enlargement of the scrotum on the affected side, swelling, and hidden pain. If the scrotum is moist with odor, wash and keep dry in time, and the odor still persists, we should go to the hospital for further examination to exclude the possibility of prostatitis, and then give appropriate treatment.