Dietary considerations for cryptogenic nephritis include: low-salt diet, high-quality low-protein diet, and try to avoid the application of medicines or health care products that are damaging to the kidneys. 1. Low-salt diet, daily salt intake is less than or equal to 6 grams, try to eat less salty food, such as marinated meat, salted vegetables and sodium-rich condiments, such as monosodium glutamate (MSG), soy sauce, oyster sauce, chicken essence. 2. High-quality low-protein diet, eating too much protein will aggravate the burden of the kidney, so the diet needs to be low-protein diet, the application of high-quality low-protein diet can increase the efficiency of protein utilization and reduce the burden on the kidneys, high-quality protein refers to the lean meat, milk, eggs and other animal proteins, as well as plant proteins such as soybean products. 3. Avoid applying medicines or health care products that are damaging to the kidneys, especially health care products with unknown ingredients. Patients with cryptogenic nephritis are advised to go to regular hospitals in time, follow the doctor’s instructions for standardized treatment, and consult a professional doctor or dietitian for dietary advice if necessary.