Objective To explore the change of miRNA-16(miR-16) level in the patients with multiple my-eloma(MM ) and its relationship with the Mayo risk stratification and prognosis judgment .Methods Each 10 mL of bone marrow samples was collected from 31 cases of MM in the hematology department of the First Af-filiated Hospital of Guangxi Medical University from August 2016 to January 2017 ,and each 5 mL of bone marrow sample was collected from 5 healthy bone marrow donors as the healthy control .The real time fluores-cence quantitative PCR(qRT-PCR) was used to analyze relative the change of miR-16 relative expression level and fluorescence in situ hybridization(iFISH) was used to detect the abnormal gene .Then the relationship be-tween miR-16 relative expression level with Mayo based risk stratification ,and the difference of miR-16 rela-tive expression level between before and after self treatment were statistically analyzed .Results The miR-16 relative expression level in MM patients was increased and positively correlated with the Mayo risk stratifica-tion .Meanwhile in the MM patients with disease progression ,the miR-16 expression was increased . Conclusion miR-16may serve as the indicator for judging the recurrence or progression of MM ,and guides the clinical personalized therapy of MM according to its expression level change .