Neighboring　block　disparity　vector　derivation　in　3D　High　Efficiency　Video　Coding　(3D-HEVC)　is　a　key　technology　to　get　the　disparity　vector.　To　improve　the　quality　of　the　disparity　vector　derived　from　the　fast　algorithm,　we　propose　a　proportion　combination　and　group　searching　method　to　get　the　NBDV.　We　first　changed　the　rule　that　takes　the　first　search　DV　as　final　NBDV,　and　then　divide　the　searching　candidates　into　several　groups　for　the　proportion　combination,　after　that　design　a　strategy　to　search　the　candidates　in　several　groups.　The　simulation　results　show　that　the　proposed　algorithm　has　improved　the　coding　quality　with　negligible　coding　time　loss.　©　2017,　Chinese　Institute　of　Electronics.　All　right　reserved.