Patients with membranous nephritis, diet should pay attention to the following aspects: First, low-salt diet, to ensure that the 24-hour salt intake is less than 3 g. Second, a light diet, avoid spicy and stimulating food, quit smoking, limit alcohol, pay attention to rest, and develop good eating habits. Third, low salt, high quality and low protein diet, high quality and low protein refers to animal protein, it is recommended that high quality protein accounts for more than 50% of protein intake, high quality protein is recommended to eat lean meat, fish, eggs, milk, shrimp, etc.. The intake should be calculated according to the kilogram weight, it is recommended that 0.6-0.8g/kg/day is appropriate. Large doses of protein intake will increase the burden on the kidneys, so a low protein diet has a protective effect on the kidneys.