Vinyl terminated polysiloxane (FSI) was prepared by ring opening polymerization of 1,3,5-trimethyl-1,3,5 (trifluoropropyl) cyclotrisiloxane(D3F), octamethylcyclotetrasiloxane(D4), and tetramethyltetravinylcyclotetrasiloxane(D4Vi). Then, the perfluorohexanyl(TE-6) was grafted into the structure of FSI to construct fluorinated polysiloxane(FSI-F) through free radical polymerization. The structure and relative molecular weight of FSI-F were characterized by NMR, GPC, and FTIR. Using FSI-F as a hydrophobic material, plastic grade polypropylene (PP) as a base material, and n-hexadecyltrimethoxysilane(Dynasylan 9116) as a compatibility modifier, respectively. The effects of FSI-F mass fraction, the mole ratio between TE-6 and D4Vi, and the amount of Dynasylan 9116 addition on the hydrophobic and mechanical properties of FSI-F/PP composites were discussed using orthogonal experimental methods. The intrinsic relationship between the morphology, thermal properties of FSI-F/PP composites and their comprehensive performances was revealed by means of SEM, AFM, and TG-DSC. Finally, a type of hydrophobic materials with hydrophobic angle, hydrophobic angle, tensile strength, and elongation at break of 130.4, 52.8, 37.56 MPa, and 1125.67% was prepared, while the n(D4Vi)：n(TE-6) = 1:2, 6 % mass fraction of FSI-F, and 2 % mass fraction of Dynasylan 9116. This study would shed light on the development of the hydro-oleophobic materials for applications in fields such as self-cleaning and pipeline drag reduction.