Patients with allergic purpura generally have a good prognosis, and their survival cycle is almost no difference compared with normal people. Allergic purpura has skin and mucous membrane bleeding as the main clinical manifestation, such as skin and mucous membrane petechiae and petechiae, mostly symmetrically distributed, which may be accompanied by fever and malaise. Since this disease does not cause a decrease in the number of platelets, it usually does not show serious organ bleeding manifestations. Although the disease can recur in some patients with allergic purpura, the vast majority of patients have a good prognosis and allergic purpura is sensitive to glucocorticoid therapy with better results. Therefore, patients with allergic purpura do not need to worry too much about the impact of their condition on their life expectancy, they should receive systematic and standardized treatment as early as possible, while avoiding tension and anxiety and living a regular life and rest.