Four-month-old baby hands and feet peeling skin may be caused by vitamin A deficiency, tinea cruris, hair erythema and other diseases, may also be caused by keratosis pilaris and other diseases. 1. Vitamin A deficiency: Vitamin A deficiency is caused by insufficient intake of vitamin A or carotene, and the main symptoms are dry skin, flaking, and impaired vision. In addition, children with vitamin A deficiency will also have short and thick bones, poor dental development and slow growth. 2. Tinea versicolor: Tinea versicolor is mainly caused by fungal infection and environmental factors, and children with the disease will have symptoms such as blisters, scales, cracked skin, itching, and nail deformation, thickening and other symptoms. 3. Other: keratosis pilaris, herpes sweat, exfoliative keratolysis and other diseases can also lead to the phenomenon of four-month-old children with hands and feet peeling. Four-month-old baby hands and feet peeling, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.