Nephritis is divided into primary nephritis as well as secondary nephropathy. If it is primary nephritis early may have the following symptoms: i. Foamy urine, when it is fine foam, which lasts for a long time and does not dissipate, caused by excessive urine protein to come. Second, edema, can be bilateral lower limbs edema, can also be eyelid edema. Third, a small number of patients will also have hematuria. Fourth, hypertension, patients may have dizziness, weakness, and discomfort at the back of the neck. In case of secondary nephropathy, there may be manifestations of various primary diseases causing nephropathy, such as lupus nephritis patients may have butterfly erythema, photosensitivity, hair loss, joint pain, and mouth ulcers. Patients with diabetic nephropathy may have polydipsia, polyphagia, polyuria, weight loss, etc. Many patients with nephritis, especially in the early stage, may not have any symptoms and need to go to the hospital to check urine routine, kidney function and other items to see.