Purpura is not a major disease, our country stipulates that there are 3 characteristics of major diseases, one is the high incidence and seriousness of the disease, often seriously threatening the life of the patient. Secondly, the treatment period is long and the treatment is difficult. Third is the high cost of treatment, often bringing serious financial burden to families and individuals, in line with these characteristics in order to be a major disease. There are ten categories of major diseases in China, and there are three major diseases related to hematology. One is aplastic anemia, the other is leukemia, and the third is bone marrow transplantation. The common purpura in hematology are allergic purpura, thrombocytopenic purpura, and simple purpura. Compared with leukemia, aplastic anemia and bone marrow transplantation, the incidence and severity of purpura is less than the first three diseases, so it is said that purpura is not a major disease.