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Polysulfone (PSf)-based hybrid membranes are developed by doping with SiO₂–GO nanohybrid. The hybrid membranes exhibit improved water permeability with the rejection to egg albumin maintained at a high level (>98%). Especially, when the content of SiO₂–GO in the membrane is 0.3 wt%, the water flux reaches a maximum that is nearly twice of that of PSf membrane. Compared with SiO₂/PSf and GO/PSf hybrid membranes, SiO₂–GO/PSf hybrid membrane presents the best overall properties, including water permeation rate, protein rejection, and antifouling ability. It can be attributed to the unique property of SiO₂–GO nanohybrid, i.e., the high hydrophilicity and good dispersibility derived from silica nanoparticles which are densely and uniformly coated on the GO surface and perform as a space layer of GO.