Allergic purpura patients need to prohibit the consumption of spicy and stimulating food, some patients also need to avoid the consumption of animal proteins that may cause sensitization. 1. Usually, patients with purpura need to pay attention to a light diet, appropriate consumption of tomatoes, citrus and other foods rich in vitamin C. However, patients need to avoid eating garlic, chili peppers and other spicy foods, if the skin purpura symptoms. But patients need to avoid eating garlic, chili and other spicy food, if the skin purpura symptoms subside within 2 months, also need to prohibit contact with crabs, scallops, oysters and other seafood and milk, eggs and other animal proteins that may cause sensitization. 2. At the same time, for patients with proteinuria-positive purpura, it is also necessary to limit the intake of sodium, so as not to have an adverse effect on the condition. During an acute attack, patients should also avoid any physical activity to avoid aggravation of the condition. If the condition is stabilized, they also need to exercise gradually and avoid standing for a long time. It is recommended that patients with purpura be advised to take a reasonable diet under the guidance of a doctor and closely monitor their condition, and if abnormalities occur, they should consult a doctor in a timely manner to take countermeasures.