Ferroelectrics　with　internal　polar　domains　has　been　utilized　to　enhance　photoinduced　carriers　separation　for　improving　photocatalytic　performance　by　combining　them　with　metal-sulfide　semiconductor　material.　Herein,　we　construct　a　new　nanohybrid　photocatalyst,　which　combines　ferroelectric　n　anospheres　(BaTiO3)　and　semiconductor　nanoparticles　(CdS).　This　hybrid　photocatalyst　exhibits　remarkable　hydrogen　production　activity.　The　optimum　hydrogen　production　rate　based　on　BaTiO3-CdS　composite　structure　reaches　483　μmol　h−1　g−1,　which　is　about　9.7　times　greater　than　that　of　pristine　CdS.　The　observations　indicate　that　charge　carriers　generated　in　CdS,　more　efficiently　migrate　to　the　surface　and　participate　in　the　redox　reactions,　influenced　by　dipolar　fields　in　the　ferroelectric　domains　of　BaTiO3.　These　mechanistic　insights　will　widen　our　fundamental　understanding　of　charge　separation　and　transfer　processes　to　steer　charge　flow　in　a　desired　and　efficient　manner.　©　2018　Elsevier　B.V.