ANCA associated vasculitis is a necrotizing vascular inflammation,usually involving multiple organs. It is one of the major diseases that cause deterioration of renal function rapidly in the elderly. The latest CHCC2012 has updated the name of ANCA associated vasculitis. Some high quality randomized clinical trials provide evident basis for treatment of vasculitis. However,elderly patients often suffer complex diseases,and are associated with underlying diseases,so it is difficult to be diagnosed and treated. It is very important to make optimized individual strategies of treatment for elderly patients with vasculitis.