The common symptoms of diabetic nephropathy are as follows: 1. Initial symptoms are insidious and can include trace amounts of urine albumin; 2. Mid-term symptoms include edema, weakness, lumbar acidity, and increased foam in the urine, cloudy urine, and increased nocturia; 3. Late symptoms include dyspnea, severe edema, decreased urine output, and numbness in the limbs; 4. End-stage symptoms include severe edema, dyspnea, depression, and the smell of urine around the body, skin nail fault, numbness, bone pain all over the body, and white face, etc.