Abstract: The work describes is primarily concerned with the fabrication and testing of flat sheet membrane. The aim of this research is to investigate the morphology of flat sheet membrane that uses silica from sugarcane bagasse as an additive. Six flat sheet membranes were then fabricated by varying the dope formulation. Membrane surface and cross-section area were analyse by scanning electron microscope (SEM). The analysis of SEM shows that the addition of silica from sugarcane bagasse changed the surface structure of the membrane especially at top layer and sub layer. The performance of flat sheet membrane were determine based on flux of pure water permeate, rejection sodium chloride solution and molecular weight cut off. The results indicate that the addition of 3% of silica give the best rejection and highest flux where successfully do rejection of 75.35 % and 42.65 L/m2hr water flux. The molecular weight cut off results shows that the membrane having solute rejection beyond 70% and categorized on their nominal molecular weight cut off.