A proper diet is very important for the health and prognosis of the disease. There are many things that cannot be eaten in cryptogenic nephritis, the most important of which are: 1. high-fat food, high-fat food will aggravate atherosclerosis, the viscosity of the blood, which is not conducive to the excretion of toxins from the kidneys. 2. restrict foods containing purines and high nitrogen, thus reducing the burden on the kidneys. 3. strong condiments should be avoided. 4. restrict vegetable protein, the amino acids contained in vegetable protein are non-essential amino acids for the human body, so you should not consume too much vegetable protein. The treatment of nephritis can not be achieved overnight, so it is necessary and very important to maintain a reasonable diet for a long time.