If you have dry, cracked or hard skin on your heels in the summer, you may suspect that most people wear sandals in the summer to keep cool, which directly exposes the heel area to strong sunlight and a dry environment, causing the heel area to dry out and become dry and cracked. If it does not improve after a long time, or if other symptoms occur, you need to consider whether it is caused by a disease, which is common in the following: 1. Keratosis pilaris: usually a positive fungal test can confirm the diagnosis of tinea pedis. The main type of tinea pedis that can cause dry, cracked skin and crusty skin is keratosis pilaris. Patients may also present with erythema, pain, or even bleeding. It can be treated with topical antifungal drugs, such as imidazole antifungal drugs and acrylamide antifungal drugs. 2. Chalazion eczema: It is a special type of eczema caused by an allergic reaction to an external substance. Often manifested as small lesions with unclear boundaries, can appear peeling, cracking, etc., can occur in the heel, while the patient is accompanied by itching and even pain. Treatment is usually by way of topical application of hormonal creams, such as compound flumethasone ointment, mometasone furoate cream, etc. In addition, people who are picky eaters or partial eaters and generally lack vitamin A and vitamin E are also prone to dry, cracked, flaky and crusty skin on the heels of the feet. Patients are advised to wear breathable shoes and socks in summer, and pay attention to regular cleaning and replacement. At the same time should be a balanced diet, avoid eating spicy and stimulating food, such as spicy hot pot, spicy crayfish, etc., moderate intake of some fresh fruits and vegetables, conducive to vitamin supplementation.