The　CdS　modified　TiO2　nanotube　arrays　were　fabricated　by　sonication　anodic　oxidation-sequential　chemical　bath　deposition　(S-CBD)　approach　and　their　mass　transfer　properties　in　photoelectrochemical　reaction　were　studies.　The　results　show　that　deposition　of　CdS　nanoparticles　significantly　improved　the　absorption　activity　in　visible　light　region.　Compared　to　the　pure　TiO2　nanotube　arrays　electrode,　the　deposited　CdS　nanoparticles　reduced　the　charge　carrier　transfer　resistance,　improved　the　charge　transfer　rate　and　lead　to　the　enhanced　photoelectric　activities.　The　sonication-assisted　deposition　approach　is　helpful　in　obtaining　uniform　distribution　of　CdS　nanoparticles　on　the　TiO2　electrode　surface,　which　can　further　facilitate　the　separation　and　transfer　of　photogenerated　charges　and　exhibit　a　higher　charge　carrier　density　of　9.29　×　1019　cm-3.