Abstract: Objective:To explore the STAT-3 wild type（STAT-3 WT）,STAT-3 dominant negative（STAT-3 DN）,STAT-3 constant act（STAT-3 CA） and STAT-3 green fluorescence（STAT-3 GF） expression by adenovirus assisted in ARIP、 AR42J cells and provide molecular basis for the mechanism of the gene modified to intervene stem cell differentiation to treat diabetes.Methods: STAT-3 WT,STAT-3 DN,STAT-3 CA and STAT-3 GF plasmids were purified;the plasmids were transfected into QBI-293A package cell line by lipofectamine.Hela cell was the control.The four adenovirus included STAT-3 gene were produced,and checked the titer;ARIP,AR42J etc cells were cultured with general and cover glass methods,and target cells were infected by adenovirus assisted.Expression of the report gene was observed by the fluorescence-microscope after infection.Results: There were strong positive reports of the green fluorescence in ARIP cells after infected by adenovirus assisted STAT-3 genes.Enough four adenovirus suspension was harvested.The titers of adenovirus were 6× 10⁶pfu/ml.Conclusion: The positive expression of STAT-3 Green fluorescences in ARIP cell provides a vital data for the further research of the STAT-3 gene modified to intervened the stem cell differentiation to treat diabetes related subject.