This article describes about the anti-CD138 chimeric antigen receptor-modified T cell therapy for multiple myeloma with extensive extramedullary involvement in patients.18F-fluorodeoxyglucose positron emission tomog. (PET)-computed tomog. scanning showed increased 18F-fluorodeoxyglucose uptake in the nodule, stomach and thoracic vertebrae of a 52-yr-old man.Second-line treatment with lenalidomide was started and as expected the plasma cells in the bone marrow decreased significantly.This article concludes that Although the patient died due to lung infection, anti-CD138 CAR-T therapy may be a potential therapy in MM with extramedullary involvement.