In this study, GFP reporter gene was transfected into a fibroblast cell line RTG-2 using a polycationic transfection reagent (Superfect) and showed a successful expression of GFP. The transfection efficiency by Superfect was compared to the commonly used transfection method, i.e. DNA-calcium phosphate coprecipitatlon. Transfection by Superfect was more effective than calcium phosphate coprecipltation method (frequency of cell expressing orr was 11.3% and 3.5%, respectively). The optimal expression of GFP and {eta}-galactosidase was observed when $5-6;{mu}{ell}$ of Superfect per ${mu}g$ DNA was used for transfcction, 1:5-6 ratio between DNA(${mu}g$) and Superfect ($muell$).