The dietary principles of allergic purpura: on the one hand, to prevent re-allergy; on the other hand, to protect the kidneys and tonify the kidneys, to reduce the degree of kidney damage. The specific principles are as follows: 1. Children with allergic purpura should immediately stop eating foods that may cause allergy, such as milk, fish, shrimp, crab, mutton, seafood and other heterogeneous proteins, and avoid contact with suspected allergens. 2, the diet should be light and nutritious and easy to digest and absorb, avoid some dietary practices. Do not eat fatty diet, do not be too full at each meal, so as not to increase the gastrointestinal burden, induce or aggravate the gastrointestinal bleeding. If you have heavy abdominal pain or positive fecal occult blood, you should eat a liquid diet, and those with obvious bleeding in the digestive tract should fast. 3, pediatric allergic purpura patients with abdominal pain, blood in the stool diet should be refined, as little as possible with coarse food or coarse fiber food, such as celery, rape, bamboo shoots, pineapple, etc., can damage the gastrointestinal mucosa, inducing or aggravating gastrointestinal bleeding. 4, avoid smoking, alcohol and spicy stimulating food, so as not to induce or aggravate the gastrointestinal bleeding. When can I eat meat, eggs and milk? This is the most common question asked by parents of children in the clinic. Generally speaking, when there is no new skin purpura for more than 10 days, you can gradually increase the food such as meat, egg and milk, adding one kind of food each time. If you have no new skin purpura for 2 days, you can add new foods. Compared with egg and milk, meat allergy is less likely, so you can try to eat meat first. Our clinical experience is that the diet should be graded and individualized: graded management: lean pork → eggs → milk → freshwater fish → other protein foods. The chance of allergy is reduced in this order. Individualized management: Certain people are clearly allergic to certain things and should be prohibited from exposure. For those with persistent skin purpura, avoidance of food and exposure to items are more strictly required, including various spices, new clothes, new books, new toys, etc.