In order to improve the anti-fouling and hydrophilic properties of polyvinylidene fluoride (PVDF) membranes, porous YxFeyZr(1-x-y)O(2) coated TiO2 solid superacid nanoparticles (SYFZr-Tis) were built through hydrolysis, coating, etching, doping, sulfation, etc., and then were doped into PVDF membranes to prepare SYFZr-Tis/PVDF hybrid membranes. The optimum preparation conditions of SYFZr-Tis were investigated and confirmed according to the acidity of SYFZr-Tis; SYFZr-Tis were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FT-IR) and Brunauer-Emmett-Teller (BET). Alternatively, the optimum doping contents of SYFZr-Tis were studied and determined according to the properties of the SYFZr-Tis/PVDF hybrid membranes. The results show that SYFZr-Tis prepared under the optimum synthesis condition reach a bigger acidity value (H-0= -16.352), the diameter of SYFZr-Tis is around 400 nm and the thickness of porous YxFeyZr1-x-yO2 shell is about 50 nm, and the surface of SYFZr-Tis has numerous hydroxyl groups. Compared with PVDF membranes, hydrophilicity, tensile strength, porosity and anti-compaction of SYFZr-Tis/PVDF hybrid membranes are improved. Meanwhile, SYFZr-Tis/PVDF hybrid membranes with the optimum content of SYFZr-Tis perform attractive anti-fouling and hydrophilic properties. Therefore, SYFZr-Tis are desirable as suitable fillers of PVDF hybrid membranes. (C) 2016 Elsevier B.V. All rights reserved.