Diabetic nephropathy stage 3 will appear trace amount of urinary protein, diabetic nephropathy is divided into 5 stages. Diabetic nephropathy stage 1: there is no sensory abnormality, there may be an increase in nocturia, typical manifestations: glomerular hyperfiltration, renal hypertrophy, Diabetic nephropathy stage 2: normoalbuminuria stage: urinary protein excretion rate is elevated, but urinary protein and urinary microalbumin are normal. Diabetic nephropathy stage 3: early diabetic nephropathy, elevated marker microalbumin, may appear elevated blood pressure. Diabetic nephropathy stage 4: for overt diabetic nephropathy, large amount of proteinuria and persistent elevated urinary protein. Typical manifestations: nephrotic syndrome, hypertension, renal function impairment, persistent, slow deterioration. Diabetic nephropathy develops into overt nephropathy with progressive renal function and eventually end-stage renal disease. Diabetic nephropathy stage 5: end-stage renal disease, if not actively controlled, kidney function continues to deteriorate to the stage of end-stage renal disease. It is recommended that diabetic nephropathy regularly and regularly to the hospital, once out of urine protein, to comply with the doctor’s instructions in a timely and early and effective treatment, so as to avoid the disease continues to progress.