This　paper　proposes　a　novel　fast　disparity　vector　derivation　algorithm　to　get　the　neighbor　block　disparity　vector　(NBDV)　for　3D　High　Efficiency　Video　Coding　(3D-HEVC)　texture　inter-view　coding.　In　the　current　3D-HEVC　design,　it　is　observed　that　the　simplified　CU　(coding　unit)based　disparity　vector　derivation　method　is　faster　than　the　method　of　full　searching,　but　the　quality　of　the　derived　vector　can　be　improved.　A　novel　group　searching　and　proportion　combination　based　disparity　vector　derivation　algorithm　is　proposed　in　this　paper　that　improves　the　accuracy　of　the　NBDV　and　maintains　the　process　efficiency　in　the　meantime.　The　test　results　of　the　proposed　algorithm　report　maximum　0.04%　PSNR/bitrate　improving　and　0.05%　bit-saving　with　the　same　efficiency　of　the　existing　fast　method　under　the　Common　Testing　Condition　(CTC).