Allergic purpura is a common disease in pediatric patients and belongs to connective tissue disease. Its pathological manifestations are small vascular lesions all over the body, while clinically it is mainly manifested by bleeding spots on the skin, joint swelling and pain, abdominal pain, and abnormal urinalysis. However, the platelets are not low in laboratory tests. According to its clinical manifestations, it is divided into skin type, joint type, abdominal type, kidney type, brain type, etc. The specific cause of the disease is still unknown, but it is related to the body’s immune response, and there are many triggers, such as: infection (bacteria, viruses, mycoplasma, tuberculosis, etc.), inhalation and contact with allergens (tree pollen, dust mites, fish, shrimp, eggs, meat, etc.), drug allergy, etc. Western medicine treatment mainly includes improving capillary permeability, anti-allergy, anti-infection, regulating immune function, etc. The common drugs used are vitamin C, rutin tablets, hormones, immunomodulators, etc. Because the disease is easy to recur, the course of the disease is long, the western medicine treatment has a course of limitation, while the application of traditional Chinese medicine treatment has been effective, so the allergic purpura belongs to one of the characteristics of Chinese medicine treatment. The Chinese medicine treatment for this disease repeatedly does not heal, joint swelling pain, abdominal pain, bloody stool, allergic purpura nephritis and nephritis (nephropathy type) through oral tonics, Chinese medicine external washing, acupuncture, ear acupuncture and other comprehensive treatment, can often receive more satisfactory results.