Both sides of the private part generally refers to the perineum, perineum itching may be due to ringworm, eczema, vulvitis, pubic lice disease and other factors, need to clarify the cause of the symptomatic treatment, common fluconazole, glycerine lotion, nitrate miconazole and other medication, if necessary, physical therapy, surgical treatment. 1. ringworm: it is an infectious skin disease caused by dermatophytes, often occurring in summer, perineum ringworm can be manifested as ring-shaped, papular and other manifestations of skin lesions, often accompanied by itching. Itraconazole and other drugs can be used for antifungal infection treatment. 2. Eczema: it is a dermatitis caused by a combination of internal and external factors, manifested as pimples, blisters, mossy skin, itching and other symptoms, easy to recur. It can be treated with medicines such as glycerine lotion, hydrocortisone and loratadine, and ultraviolet light therapy is also effective. 3. Vulvovaginitis: It is a common gynecological inflammation caused by various reasons, which can be manifested as itching, pain, burning sensation, redness and swelling of vulvar skin. It can be treated with drugs such as potassium permanganate solution. 4. Pubic lice disease: it is a parasitic disease caused by pubic lice biting the perineal skin, manifested as itching, red rash, green ecchymosis and other symptoms. Sulfur ointment, phenothrin, malathion and other drugs can be used to exterminate lice and eggs. Itchy perineum may also be caused by other factors, it is recommended that patients seek medical attention in time, under the guidance of the doctor to carry out relevant examinations, standardized treatment, and avoid private medication, so as not to delay the condition.