The baby’s ear root always cracks, consider and insufficient moisture, nutritional deficiency, poor hygiene, eczema and other factors related. It is recommended to pay attention to water and nutritional supplements, pay attention to local cleanliness and hygiene, and give medication if necessary. 1. Insufficient moisture: the weather is dry in spring and fall, and the skin loses more moisture, which may lead to dry and cracked skin. It is recommended to pay attention to water supplementation, good local moisturizing, can reduce skin cracking. 2. Nutritional deficiencies: Often partiality and picky eating, resulting in vitamin and trace element deficiencies. It is recommended to pay attention to nutritional supplementation, give a variety of fresh fruits and vegetables, eggs, dairy, meat, if necessary, under the guidance of a doctor to supplement a variety of trace elements, can help improve. 3. Poor hygiene: usually do not pay attention to local hygiene, such as milk stains spilled to the root of the ear, not timely treatment, may lead to local cracks. It is recommended to do a good job of local care, to avoid the dirt on the local stimulation. 4. Eczema: Eczema of the external auditory canal, resulting in local dryness, itching, cracking, it is recommended to avoid the intake of food that can easily trigger allergies, and if necessary, give zinc oxide ointment and other drugs. Baby ear root often cracked, it is recommended to pay attention to, if necessary, you can go to the hospital, under the guidance of the doctor for treatment.