Blood crusts on the scalp of infants are seen in dry eczema. Dry eczema is most often seen in thin infants. It occurs on the scalp, between the eyebrows, and other areas and presents as flushing, flaking, and papules without significant exudation. When chronic, it can also be mildly infiltrated and hypertrophic, with chapping, scratching or crusting. The infant’s crying and sleep disturbance are often caused by paroxysmal and intense itching. Scalp crusting in infants is most common in infants over 1 year of age who are malnourished, thin, or have dry skin. Infants have thin skin stratum corneum, rich capillary network and endothelium containing more water and chloride, and are more sensitive to various irritants. Infant scalp crusts are mainly light or dark red patches with papules or branched scales, no blisters or exudation, dry skin, sometimes with infiltrates, hypertrophy and chapping. To prevent scalp scabs in infants, first of all, the clothing is cotton, all the collar of the clothes is best cotton, clothes to wear slightly cooler, clothing should be looser, lighter and softer. The best bed bedding is cotton, clothing, pillows, bedding, etc. should be changed frequently to keep dry. Daily life care should avoid overheating and sweating. And let the baby avoid contact with feathers, animal hair, pollen, chemical fiber and other allergic substances. Clothing and blankets should not be made of silk, wool and chemical fiber products.