Allergic purpura can be cured, some patients may recur, and some can be cured without recurrence. Allergic purpura belongs to the common vascular allergic reaction disease, mainly refers to the body to certain sensitizing substances to produce perverse reaction, so it will lead to capillary fragility and permeability increase, and then there will be skin, nodules, intestines, kidneys, small blood vessels of inflammation and hemorrhage. The disease is not contagious, but there is a certain genetic predisposition, and treatment is mainly based on removing the triggering factors, controlling the patient’s symptoms, and actively preventing comorbidities. Most patients will recover on their own, so in the clinical aspect, the main symptomatic supportive treatment can be given. Patients should actively search for allergens and remove them, and severe patients can choose to use glucocorticosteroids such as methylprednisolone, prednisone and dexamethasone. In the case of poor glucocorticoid treatment, patients can switch to immunosuppressive drugs, such as cyclosporine. If the diagnosis of allergic purpura is confirmed, it is recommended to carry out standardized treatment as soon as possible to reduce the adverse effects of the disease.