Cracked ears may be caused by eczema of the outer ear, trauma, dry skin and other factors. 1. Eczema of the outer ear: changes in localized chronic eczema of the ear, in addition to itching, thickening of the skin of the outer ear, epidermal flaking, cracking, scabbing manifestations, which can be manifested as cracked ears. 2. Trauma: when the ear is pulled or direct violence and other trauma, it can lead to tearing of the skin and subcutaneous cartilage on the surface of the auricle, which can lead to the performance of ear cracking. 3. Dry skin: due to the dry weather and climate, less daily drinking water, less intake of fresh fruits and vegetables, etc., can trigger localized dry cracks in the skin of the ear, the performance of cracked ears. When the ear cracking should be timely medical treatment, under the guidance of specialists to actively carry out appropriate treatment.