The difference between diabetic nephritis and diabetic nephropathy is mainly for the etiology and clinical manifestations. Diabetic nephritis is a patient with both diseases; diabetic nephropathy is a complication caused by diabetes mellitus. Diabetes mellitus combined with nephritis is that the patient suffers from both diseases of diabetes mellitus and nephritis at the same time, and the patient may have the symptoms of both diseases of diabetes mellitus and nephritis, such as polyuria, polydipsia, hematuria, proteinuria, and so on. Diabetic nephropathy is a kind of diabetic microvascular complication caused by diabetes mellitus. In the early stage of the disease, there are usually no obvious symptoms, and with the aggravation of the disease, the patient may have symptoms such as hypertension, edema, proteinuria, etc., and the severe cases may develop to renal failure. Whether it is diabetic nephritis or diabetic nephropathy, it is recommended to go to the regular hospital in time, under the guidance of the doctor standardized treatment.