Objective To construct and identify the efficacy of a lentiviral vector harboring RNA interference sequence targeting hyperplasia suppressor gene (HSG). Methods Four siRNA sequences targeting HSG mRNA were designed. The lentivirus vectors of GCSIL-GFP-HSG were constructed and confirmed by DNA sequencing. The 293T cells were co-transfected with pGCSIL-GFP-HSG, pHelper1.0 and pHelper2.0 in order to produce virus stocks. The titer of the virus was also tested. The lentivirus was transfected to human A549 lung adenocarcinoma cells. The expression of HSG gene was analyzed by real-time PCR. Results DNA sequencing suggested that the DNA sequences were consisted with the design, which meant that the RNAi sequence targeting the human HSG gene was correct. Examination of the co-transfected cells by fluorescence microscopy suggested that the cells grew well and had strong fluorescence intensity. The titer of the virus was 3×108 TU/ml. Real-time PCR showed that the expression of the HSG gene was knockdown after the lentivirus transfected to A549 cells. Conclusions The lentiviral vector of the HSG gene of Homo sapiens was successfully constructed, which could be further used in oncology.