Itchy testicles are generally itchy scrotal skin, with localized dampness and sweating, but also may be related to pubic lice, scabies or scrotal eczema. 1. Local humidity: If you are in a high temperature environment for a long time, or wear tight underwear, the scrotum is easy to sweat, coupled with the friction of the underwear stimulation, do not pay attention to hygiene, easy to itch, pay attention to the local ventilation, dryness, and maintain hygiene can be restored. 2. Pubic lice, scabies: scrotum if infected with pubic lice or scabies, can cause insect bite dermatitis, resulting in intense itching of the scrotum skin. 3. Scrotal eczema: It can manifest as itching, redness, oozing and erosion of the scrotum. Scrotal itching may also be caused by other factors, ruled out the physiological factors, to go to the regular hospital for further consultation, to identify the specific causes of the disease and then give the appropriate treatment, and strive for early recovery.