Water scarcity is one of the most critical problems in the world, and to solve this problem a thin film composite (TFC) membrane with high performance for forward osmosis (FO) applications is designed in this work. FO process can be applied in fi elds such as sea water desalination,treatment of factory waste and water purification; the mechanism of FO process is by the difference of osmotic pressure, which is a more energy efficient way compared to the conventional RO process, meeting with goals 6 and 7 in the UN SDGs. In our research, a polyelectrolyte (PAN) substrate is fabricated first with different concentrations of GO integrated, followed by the deposition of polyelectrolyte on it. The modified molecular layer-by-layer (mLBL) method is then adopted to fabricate polyamide (PA) active layer, also embedded with varied amount of GO. Results show that after the GO modification to the PAN sub strate, the FO performance is significantly improved, indicating that this method may have great potential usage in future FO technologies. Moreover, the dispersity of GO in PA layer may be a key factor to reaching higher FO performance in further research of the future.