During the purpura period: (1) Eat: Diet should be rich in nutrition, easy to digest, eat more fresh vegetables, fruits; to light diet, low salt, low fat, high quality low protein and high vitamin diet (main food to pasta, no or less seasoning). (2) Avoid eating: ① Avoid fish, shrimp, crab, pollen, cow’s milk and other diets that may induce allergies. (2) Avoid eating tobacco and alcohol. ③ Avoid eating spicy, fragrant and dry stimulants and seafood and hairy products such as rooster, sea fish, beef, mutton, goose, etc., so as not to aggravate the disease by heat and fire. Meat, eggs, milk temporarily do not eat. ④ Avoid eating puffed food, fried food and other snacks, and avoid eating street food with more seasoning. 2, skin purpura recede: purpura recede and no new purpura > 10 days, after the purpura is stable, you can gradually add meat, eggs, milk and other diet, but gradually add one kind of food, such as every 3-5 days to add a food, if no new purpura can be safe to eat. If you are allergic to a certain food, try to avoid that food. If there are acute symptoms such as abdominal pain and arthralgia during purpura, bed rest is recommended; if there is no abdominal pain and arthralgia during purpura, you can do normal activities and avoid strenuous sports (such as basketball, running, etc.), which will not affect your daily work and study. The allergic purpura patients are prone to recurrence within six months after the purpura subsides, it is recommended that patients should adhere to consolidate treatment for a course after cure, pay attention to dietary hygiene and weather changes in daily life to avoid diarrhea, cold and other induced purpura recurrence. Fourth, life care Try not to touch new clothes, new shoes, newly decorated houses, newly bought textbooks, etc. during purpura to avoid aggravating purpura by contacting irritating smell.