［Objective］To address the poor water resistance and limited mechanical stability ofconventional organic anti-oil coatings，as well as the gradual deterioration of surface hydrophilicity ininorganic hydrophilic coatings during service.［Methods］A zwitterion-bearing hybrid anti-oil coatingwas prepared by co-condensation of zwitterionic siloxane with tetraethyl orthosilicate（TEOS） and aqueous silica sol. The wettability，surface composition and morphology，optical transmittance，pencil hardness，and adhesion of the coatings were characterized，and the effect of zwitterionic siloxane content on anti-oil performance under both dry and wet conditions was systematically investigated.［Results］The zwitterionic siloxane content induced a transition in surface structure from an inorganic-featured morphology to a more uniform and compact hybrid architecture，while maintaining a transmittance higher than 91%. When the content of zwitterionic siloxane reached 75wt% of the total mass of TEOS and SiO₂ nanoparticles，the obtained coating exhibited the optimal overall performance， with a pencil hardness of 3H and an adhesion grade of 0. Even after immersion in water for 200 h，the water contact angle remained below 5°，and the coating exhibited underwater superoleophobicity against various vegetable oils.［Conclusion］ For low-to medium-viscosity oils and oil fume contaminants adhered under dry conditions，the coating also showed excellent water-displacement-driven oil removalwettability and easy-cleaning performance.