Summer heel roughness and dry cracks may be caused by physiological reasons, may also be caused by pathological reasons, common diseases such as tinea pedis, eczema, etc., as follows: 1. Physiological reasons: may be due to the heel skin oil secretion less, long-term exposure to irritating or alkaline substances caused by the local appearance of rough and dry cracks, resulting in rough and dry cracks in the heel. 2. Pathological causes: (1) Tinea pedis: especially scaly keratinized tinea pedis, often caused by fungal infection, manifested as thickening, dryness and flaking of the foot metatarsal, heel and other parts of the foot, the symptoms are serious in winter, and sometimes in summer, it can lead to rough and dry cracks on the heel. (2) Eczema: especially chronic eczema, mainly due to multiple factors caused by a superficial inflammatory disease of the skin, often manifested as erythema on the basis of scales, skin thickening, mossy changes and other symptoms. If the disease remains untreated for a long time and occurs on the heels, rough and cracked skin may appear in summer. It is recommended that patients with rough and cracked heels in summer should go to the hospital in time for a complete examination to clarify the cause of the disease and then give targeted treatment or therapy.