Purpura nephritis is a diffuse hemorrhagic disease of the blood vessels, the cause of which is allergy, including food, drug allergies and inflammation and other factors. In addition to effective clinical treatment, patients should pay attention to the patient’s diet is also a very important part of their daily life, so a reasonable cooperation in the diet can effectively promote the condition of purpura nephritis healed as soon as possible: first, rich in vitamin-rich foods to eat more, because vitamin C has the role of reducing capillary permeability and brittleness, such as grapefruit, mandarin oranges, lemons, strawberries, tomatoes, etc. . Secondly, it is forbidden to use all kinds of allergenic food, such as foreign proteins, which can aggravate the condition and increase the burden on the kidneys, such as fish, shrimp, crab, eggs, milk, fava beans and so on. Third, to eat more protein high food and food with blood tonic effect, such as lean meat, poultry eggs, spinach, tomatoes, kelp, purple cabbage, fungus, jujube. Purpura nephritis patients’ diet should be supplemented with a variety of nutritious food, but also try to make the food light blood, patients with kidney damage should limit the intake of salt and water.