In principle, patients with allergic purpura should pay attention to a light diet, dietary contraindications easily sensitized or spicy food. 1. Dietary contraindications (1) Patients should usually avoid contact with allergens and the intake of easily sensitized foods, such as fish, shrimp and other seafood, etc. Because these foods are rich in large molecular proteins, they are easy to cause allergies. Because these foods are rich in large protein molecules, which can easily cause allergies; (2) Alcohol consumption should also be avoided to prevent aggravation of the rash; (3) Avoid spicy and irritating foods, such as chili peppers and peppers, in order to prevent skin irritation and increase the rash. 2. Dietary advice (1) Patients with allergic purpura should have a light diet, not too oily, too hot, too hot, and so on; (2) Pay attention to a balanced diet, to eat some grains and cereals, supplement multivitamins, etc.. Patients with allergic purpura, need to go to the hospital regularly for review, follow the doctor’s instructions for medication, and go to the hospital in time when there is any discomfort.