Nail crescent edge peeling dry may be caused by physiological factors, such as environmental dryness, etc., may also be caused by pathological factors, such as nail fungus, chronic eczema and certain vitamin deficiency diseases. 1. Physiological factors: the air is dry in autumn and winter, the lack of moisture in the skin will appear flaking, itching and other symptoms, in ordinary life should pay attention to moisturizing, drink more water to help improve dry skin. 2. Pathological factors: (1) ringworm of the nails: when people’s resistance decreases, fungi will multiply in the peri-nail skin, leading to peri-nail skin infections, and the phenomenon of peeling and drying or even cracking of the edges of the fingernail crescent. (2) Chronic eczema: a chronic, inflammatory skin disease often caused by internal and external factors, the cause of which is not yet clear, and may be related to genetics, allergies, etc. It often manifests itself as thickening of the skin around the nails, flaking with itching. (3) certain vitamin deficiency diseases: such as the lack of vitamin B will cause certain damage to the skin mucosa, so that the skin mucosa parts appear rough, aging, etc., it is recommended to eat more fresh fruits and vegetables in ordinary life. It is recommended that patients with peeling and drying of the edge of the nail crescent, after excluding physiological factors, go to the hospital in time for a clear diagnosis and standardized treatment.