The causes of skin flaking are physiological such as dry skin; pathological such as ichthyosis, erythroderma, diabetes, kidney disease, liver disease, fungal infections, etc., which need to be analyzed specifically. 1. Physiological reasons: excessive cleansing of the skin or frequent use of alkaline cleansers can lead to excessive loss of skin moisture, insufficient hydration of the stratum corneum, which will lead to the symptoms of skin peeling. 2. Pathological causes: ichthyosis can lead to dry skin, this disease is due to genetic factors, often occurring in the area of both lower legs. Erythroderma can lead to flushing, swelling and flaking of the skin. Diabetes or chronic kidney or liver disease can cause the skin to produce insufficient oil, leading to the appearance of dry skin symptoms. In addition, flaky skin can occur when the skin is infected by a fungus. If skin flaking occurs, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to treat the symptoms, to prevent the symptoms from becoming more serious.