Methods: Forty patients with diffuse proliferative or membranous were recruited for this trial, 45% of them had lower Ccr (<60mL/min/1.73m2), 10% had increased serum creatinine (>180µmol/L) and 67.5% had nephritic proteinuria (>3.5g/day). The investigators compared the efficacy and adverse effects of TAC (0.04-0.08 mg/kg/d) and prednisone for 12 months (TAC group) with pulse cyclophosphamide (750mg/m2 per month for six months) and prednisone followed by azathioprine (50mg/day）for 6 months (CYC group).