The rash of pediatric purpura usually disappears on its own, depending on the severity of the disease and whether the treatment is appropriate. Purpura is a purple plaque within 3-5mm in diameter after the capillaries of the skin mucosa have ruptured and bled. The common purpura diseases are allergic purpura, thrombocytopenic purpura and simple purpura. For allergic purpura, if the rash is limited in distribution, after hormonal treatment, most children’s symptoms can gradually disappear in about 10 days, but it can recur in batches. In case of thrombocytopenic purpura, if the platelet count is normal after hormonal treatment, most children can be cured in 2 weeks. In addition, during the period of illness, you should also pay attention to avoid spicy and irritating diet, avoid seafood and food containing protein, eat light and easy to digest food, more intake of vegetables and fruits to strengthen their immune system.