IgA nephropathy is one of the primary glomerular diseases. Avoid eating high protein, high fat and high salt food in daily diet, low salt, low fat, high quality low protein diet should be the main. 1. Avoid eating high protein food: plant protein such as beans and soy products are less utilized in the body, which is easy to increase the burden on the kidneys and is not recommended. It is recommended that patients should have a high-quality low-protein diet, i.e., eggs, milk, lean meat as the main diet, and choose foods containing as little protein as possible (e.g., wheat starch, rice) as the main source of calories, and pay attention to controlling the total amount of protein. 2. Avoid eating high-fat food: high-fat food includes fried food, fat meat, animal offal, etc. Patients with IgA nephropathy should have a low-fat diet. 3. Avoid eating high salt food: light diet is the main, avoid eating salty dishes, pickles, pickled products and other high salt food. IgA nephropathy patients should go to the hospital in time, actively cooperate with professional physicians for treatment, and consult professional doctors for dietary advice if necessary.