In order to improve the antifouling performance of polyvinylidene fluoride (PVDF) membrane, GO/TiO₂/PVDF composite ultrafiltration membrane was prepared by non solvent induced precipitation phase separation method with GO/TiO₂ nanocomposites as additives. The structure and morphology of PVDF membrane were characterized by FTIR, SEM and static contact angle analyzer. The water flux and anti pollution performance of PVDF membrane were evaluated by ultrafiltration method. The results show that when the addition amount of GO/TiO₂ nanocomposites is 0.05wt.%, compared with bare PVDF membrane, GO/TiO₂/PVDF composite ultrafiltration membrane showed the best hydrophilicity and antifouling performance. The static contact angle of the membrane decreased by 8.2 o, and the porosity increased by 13.5%. GO/TiO₂ nanocomposites were evenly distributed in PVDF membrane. Under the filtration pressure of 0.08MPa, when the addition of GO/TiO₂ is 0.05wt.%, the pure water flux of GO/TiO₂/PVDF membrane is as high as 282.44 L/m₂^.h, the filtration flux of humic acid (HA) solution is 131.96 L/m₂^.h, and the pure water flux after hydraulic cleaning is 194.98 L/m₂^.h, which is 2.1 times, 1.5 times and 1.8 times that of bare PVDF membrane respectively. In addition, compared with pure PVDF membrane, the interception rate of HA by 0.05 wt.% GO/TiO₂/PVDF membrane increased by 8.6%, the membrane flux recovery rate increased by 24.3%, the total pollution rate decreased by 39.2%, the reversible pollution rate decreased by 18.3%, and the irreversible pollution rate decreased by 46.8%. Therefore, GO/TiO₂ nanocomposites significantly improve the antifouling performance of PVDF films and are an effective additive.