There are many things to pay attention to in pediatric allergic purpura. Many parents of children with pediatric allergic purpura have taken inappropriate measures when encountering some similar problems due to insufficient understanding of pediatric allergic purpura precautions in their lives, which have adverse effects on the condition of pediatric allergic purpura. In this issue, expert opinion invited Meng Zhaoying to give detailed guidance to parents on precautions for pediatric allergic purpura. The disease occurs more rapidly and is more severe, with subcutaneous purpura and even intestinal and renal bleeding within a short period of time. The onset of this disease is related to the heart, lung and kidney in Chinese medicine. It is mainly due to heart and kidney fire, blood heat and blood dryness, lung meridian wind and cold depression and fire injury to blood circulation. It occurs in children who are born with weak constitution and deficient spleen and kidney; who usually consume too much liquid diet, with weak spleen and stomach and poor protein absorption; who usually consume less protein such as meat; and who sleep late for a long time. The above causes lead to fire in the heart and kidneys, and the onset of the disease occurs when they feel wind and cold after resting more poorly or eating spicy food, and wind and cold cause fire. The treatment is based on the combination of Zhi Bai Di Huang Tang and Ma Huang Lian Qiao Chi Xiao Dou Tang, to nourish Yin and lower fire, dispel cold and promote lung, cool the blood and stop bleeding. There are two points to note in the treatment: 1, usually and when sick, let the child sleep as early as possible, staying up late is an important cause of the disease. 2, not because of the fear of allergens to completely control their meat and other protein intake, external factors are light, appropriate protein supplementation is very important to the treatment of the disease, in fact, there are similar to gammaglobulin treatment, protein supplementation to bring down the false fire, mainly pork, water duck and rabbit meat and other clear tonic products. Avoid chicken, beef, seafood and spicy food.