Early symptoms of chronic nephritis are usually not obvious, with insidious and slow onset. Early on, it can be manifested as edema, foamy urine and other symptoms, which are usually found in physical examination such as urinary abnormality, high blood pressure, edema and so on. 1. Urine abnormalities: some patients may have hematuria, and a layer of tiny bubbles floating on the surface of urine, which can’t disappear for a long time. 2. Hypertension: Patients with chronic nephritis may have high blood pressure in the early stage, which will be manifested by dizziness, headache, chest tightness and fatigue. The more serious the damage of kidney function, the more likely to occur hypertension, and the general symptoms are more obvious. 3. Edema: mainly due to long-term proteinuria caused by plasma protein is too low, plasma colloid osmotic pressure is reduced, the liquid from the blood vessels into the tissue interstitial space, resulting in edema; glomerular filtration rate decreases, while tubular reabsorption function is basically normal, resulting in water and sodium retention, thus manifesting the symptoms of edema. Some patients with chronic nephritis may also have other atypical symptoms in the early stage, such as nausea, vomiting, loss of appetite and pallor. Patients with chronic nephritis are advised to consult regular hospitals and standardize treatment under the guidance of physicians.