Flaking is actually a condition of flaking on the skin of the body, where the normal top layer of skin is constantly keratinized and renewed. It is normally small and unnoticeable, while disease-induced flakiness is very noticeable or, depending on the flakiness, is a characteristic manifestation of the disease. The cause of flaking lies in the stratum corneum, which is protected by an intact stratum corneum that maintains the skin’s delicate, smooth and elastic appearance. The stratum corneum contains the proper moisture content, natural moisturizing factors, lipids and other components. As people age, dry weather, and lack of care, the moisture content of the stratum corneum decreases and the skin becomes dry, tight, and flaky. If there is a large number of skin flaking condition, it means that the stratum corneum keratinization is abnormal, and most of them are pathological, such as psoriasis, which is manifested as silver-white scales on the red plaques, and film phenomenon and punctate hemorrhage can be seen when scraping. Physiological causes of dry flaking should pay attention to skin moisturizing care, if there is a lot of flaking, to seek medical treatment as soon as possible, symptomatic treatment.