Iga stage 5 should refer to Iga nephropathy grade 5, which generally cannot be completely cured, but it is not hopeless. Iga nephropathy grade 5 indicates that the condition is more serious, most of them will have a large amount of proteinuria, often need to take hormone therapy and immunosuppressant therapy, the most commonly used drugs are prednisolone, cyclophosphamide, cyclosporine, etc. However, if there is a decline in renal function leading to chronic renal failure, often there is no specific drug, only to slow down the development of renal function. In addition, the gradual development of chronic renal failure may enter the uremic stage, simple drug treatment is often difficult to alleviate the symptoms, and need to take renal replacement therapy or hemodialysis treatment and so on. Iga nephropathy grade 5 must actively cooperate with doctors to control the development of the disease and improve the quality of life.