狼疮性肾炎 (ＬＮ)是系统性红斑狼疮 (ＳＬＥ)累及肾脏所引起的一种免疫复合物性肾炎 ,是ＳＬＥ的主要合并症和主要的死亡原因。ＳＬＥ的发病人数在我国约为 70例 /1 0万。ＳＬＥ患者约有 70 %以上有明显的肾损害 ,从病理的角度看几乎达1 0 0 %。因此ＬＮ的治疗具有非常重要的 Lupus nephritis (LN) is an immune complex nephritis caused by systemic lupus erythematosus (SLE) involving the kidney and is a major comorbidity and a major cause of death in SLE. The incidence of SLE in our country is about 70 cases / 100000. About 70% of SLE patients have significant renal damage, from the pathological point of view almost 100%. Therefore, the treatment of LN is very important