Chronic nephritis is harmful to the body, including proteinuria, hematuria, edema, high blood pressure and different degrees of renal decompensation. Clinical manifestations of chronic nephritis are diversified, proteinuria, hematuria, hypertension, edema as its basic clinical manifestations, there may be different degrees of renal hypoplasia, the condition of light and heavy, delayed, and gradually develop into chronic renal insufficiency. Some patients with chronic nephritis may suffer from acute attacks due to persistent elevation of blood pressure (especially diastolic blood pressure), infection, exertion, etc., or the condition may deteriorate rapidly after using nephrotoxic drugs. The condition may be relieved to a certain extent after timely removal of the triggers and appropriate treatment, but it may also lead to irreversible chronic renal failure. Most patients with chronic nephritis have chronic progressive damage to renal function, and the type of renal pathology is an important factor in determining the speed of progression of renal function (e.g., tethered capillary glomerulonephritis progresses faster, and membranous nephropathy often progresses more slowly). Patients with chronic nephritis should go to the hospital in time for consultation and timely treatment under the guidance of professional physicians.