Allergic purpura is a type of vasculitis that recurs symptomatically, but most cases can be cured with systematic and standardized medication. This disease has complex classifications including skin type, gastrointestinal type, joint type, and renal type. The simple types generally have milder symptoms and are easier to cure; however, complex damages often exhibit a clinical characteristic of being difficult to cure. It is important to rest, control physical activity, and follow a cautious and reasonable diet, avoiding cold foods and seafood. Treatment involves anti-inflammatory measures, improving the permeability of peripheral blood vessels, and supporting immune regulation.