Genital itching can be caused by physiological factors, but it can also be caused by allergic skin diseases, fungal diseases, internal diseases, and so on. Should go to the hospital to clarify the specific causes. 1. Physiological factors: it is possible that genital itching is caused by dry skin. With age, the labia majora and minora and scrotal skin atrophy, secretion will gradually decrease, which will lead to itchy skin. 2. Pathologic factors: (1) Allergic skin diseases: for example, eczema, eczema is a chronic, inflammatory, itchy skin disease. (2) Fungal diseases: for example, mycosis vaginalis, glans penis, etc., may lead to genital itching symptoms. (3) Internal diseases: for example, diabetes mellitus, due to abnormal elevation of blood sugar, resulting in abnormal blood sugar metabolism caused by the labia and scrotum skin itching. It is recommended that patients with symptoms of genital itching should go to the hospital in time for examination, to clarify the cause of the disease, and under the guidance of the doctor for treatment.