1, keep the skin clean, avoid stimulation, such as scratching, sun, wind, etc.; in order to prevent scratching the skin, you should often cut the child’s nails, wash your hands or wear gloves. 2, children’s clothes should be wide, preferably made of soft and breathable cotton fabric, without woolen fabrics, chemical fiber products, dark-colored fabrics to prevent allergies. 3, do not use alkaline soap, hand soap and too hot water bath. 4, diet should be light, avoid seafood, beef and mutton and other hot food. 5. Check allergens early for children older than 3 years old and try to avoid them.