• Age ≥ 65 years old

• Newly diagnosed Multiple myeloma patients with measurable disease. Diagnosis of multiple myeloma as documented per International Myeloma Working Group (IMWG) criteria：Monoclonal plasma cells in the bone marrow greater than or equal to (\>=)10 percentage (%) or presence of a biopsy proven plasmacytoma and documented multiple myeloma satisfying at least one of the calcium, renal, anemia, bone (CRAB) criteria or SLiM. CRAB criteria: Hypercalcemia: serum calcium greater than (\>) 0.25 millimoles per liter (mmol/L) (\>1 milligram per deciliter \[mg/dL\]) higher than upper limit of normal (ULN) or \>2.75 mmol/L (\>11 mg/dL); Renal insufficiency: creatinine clearance less than (\<) 40 milliliter per minute (mL/min) or serum creatinine \>177 micro millimoles per liter (umol/L) (\>2 mg/dL); Anemia: hemoglobin \>2 g/dL below the lower limit of normal or hemoglobin \<10 g/dL; Bone lesions: one or more osteolytic lesions on skeletal radiography, computed tomography (CT), or positron emission tomography (PET)-CT. SLiM: Clonal bone marrow plasma cell percentage \>=60%; Involved: uninvolved serum free light chain (FLC) ratio \>=100; \>1 focal lesion on magnetic resonance imaging (MRI) studies.

• Measurable disease: Immunoglobulin (Ig) G myeloma (serum monoclonal paraprotein \[M-protein\] level \>= 0.5 gram/deciliter \[g/dL\] or urine M-protein level \>= 200 milligram\[mg\]/24 hours\[hrs\]); OR IgA, IgM, IgD, or IgE multiple myeloma (serum M-protein level \>= 0.2 g/dL or urine M-protein level \>= 200 mg/24 hrs); OR Light chain multiple myeloma (serum immunoglobulin free light chain \>= 10 mg/dL and abnormal serum immunoglobulin kappa lambda free light chain ratio)

• Expected survival more than 3 months

• No active infectious disease

• Be able to understand the characteristics of the disease, voluntarily join this study protocol for treatment and follow-up

• Have signed informed consent. Informed consent was obtained from the patients themselves or their immediate family members.