Constructing　Z-scheme　type　photocatalyst　is　an　efficient　way　to　improve　the　charge　separation　efficiency　and　enhance　the　photocatalytic　activity.　In　this　report,　the　Cd:TiO2　nanoparticles　are　prepared　via　the　sol-gel　route　and　employed　as　a　starting　material.　When　it　was　reduced　by　NaBH4　at　300　degrees　C,　the　surface　oxygen　vacancies　were　produced　and　Cd2+　was　reduced　into　metal　Cd-0　nanoparticle　(denoted　as　R-Cd:TiO2).　Subsequently,　the　formed　R-Cd:TiO2　was　treated　with　thioureain　the　hydrothermal　reaction.　Through　the　decomposition　of　thiourea,　the　oxygen　vacancies　were　refilled　by　S(2-)from　thiourea　to　form　S:TiO2/TiO2　(d-TiO2)　and　Cd　was　partially　converted　into　CdS　to　form　CdS/Cd/d-TiO2　composite.　The　formed　CdS/Cd/d-TiO2　composite　exhibits　improved　photocatalytic　activity.　Under　visible　light　irradiation　(lambda＞400　nm),　the　H-2　production　rate　of　CdS/Cd/d-TiO2　reaches　119　mu　mol　h(-1)　with　50　mg　of　photocatalyst　without　any　cocatalyst,　which　is　about　200　and　60　times　higher　than　that　of　S:TiO2/TiO2　(0.57　mu　mol　h(-1)),　CdS　(2.03　mu　mol　h(-1))　and　heterojunction　CdS/d-TiO2　(2.17　mu　mol　h(-1))　materials,　respectively.　The　results　illustrate　that　metal　Cd　greatly　promotes　the　charge　separation　efficiency　due　to　the　formation　of　Z-scheme　type　composite.　In　addition,　the　photocatalytic　activity　in　the　visible　light　region　was　dramatically　enhanced　due　to　the　contribution　of　both　CdS　and　d-TiO2.　The　method　could　be　easily　extended　to　other　wide　bandgap　semiconductors　for　constructing　visible　light　responsive　Z-scheme　type　photocatalysts.