Itchy private parts of boys need to first clarify the causes, including wearing chemical fiber underwear, local moist and sweaty caused by itching, scrotal eczema, allergies, sexually transmitted diseases and other causes caused by warm water sitz baths, topical ointment, internal medication, physical therapy for treatment. 1. Itching in the private parts of the boys, it is recommended to go to the men’s department of the hospital for examination to understand the causes of itching. For example, itching caused by wearing chemical fiber underwear, local dampness and sweating can be helped by taking a warm water sitz bath with potassium permanganate. 2. Itchy private parts caused by scrotal eczema, we should pay attention to the change of underwear, take the underwear to the sun, but also to keep the local dry. Can give skin Kang lotion, erythromycin ointment, glycerine lotion, mometasone furoate ointment topical application, can relieve itching. 3. Itching is more serious, which affects life and sleep, if it is caused by allergy, after clear diagnosis, with oral antihistamines, the most commonly used clinical drugs are loratadine, cetirizine, which can help to improve the patient’s quality of life. 4. Genital herpes and condyloma acuminatum, which can also lead to localized itching, are recommended to go to a hospital STD specialist. Acyclovir, vasiclovir, and glycerite lotion are given under doctor’s supervision, and warts are removed by laser and freezing if necessary. Itching in the private parts can also be considered to be related to fungal and viral infections, and it is recommended to go to the hospital and also to treat the primary disease.