Objective To establish a stably expressing human GPC3 SK-Hep-1 cell line. Methods The eukaryotic expression vector pcDNA3. 1-GPC3 was constructed and transfected into SK-Hep-1 cells by electroporation. The G418 optimum screening concentration for SK-Hep-1 cells was 700 μg / mL. Transfected cells with the target gene were screened with G418 for 20 days. Analysis of GPC3 expression in the stable cell line was performed by Western blot and flow cytometry. Results Western blot result showed that the GPC3 expressing level of SK-Hep-1/ GPC3 was markedly higher than that of HepG2. Flow cytometry demonstrated GPC3 protein on the surface of SK-Hep-1/ GPC3 cells. Conclusions SK-Hep-1/ GPC3 cells that stably expressed GPC3 protein were successfully established. These result provide a solid foundation for further research on GPC3 therapeutic antibodies.