There is always a bad smell around the testicles suggest further examination, according to physiological factors, scrotal eczema and circumcision and glans, such as the choice of cleaning, cetirizine hydrochloride and other medication. 1. Physiological factors: if the environment is hot and humid or underwear is not breathable, etc., in a large amount of sweat if not cleaned in a timely manner, it is easy to lead to the perineum odor, do not need special treatment, pay attention to timely cleaning, with loose breathable clothing can be. 2. Scrotal eczema: due to mental factors, environmental factors and other triggers of scrotal eczema can also lead to the appearance of pimples, oozing and odor, etc., it is recommended that you can use glycerine lotion, diluted potassium permanganate solution to clean, and take cetirizine hydrochloride tablets and other medications. 3. Foreskin glans: For those who are circumcised or have a long foreskin, there may be a buildup of foreskin scales, triggering foreskin glans to cause odor, it is recommended to use saline to clean thoroughly, topical erythromycin ointment and other antibacterial medications, and surgical excision of the excessively long foreskin, if necessary. Therefore, it is recommended to go to the hospital for further examination if necessary, to clarify the cause of the symptomatic treatment.