The　latest　advance　in　deposition,property　modification　and　applications　of　β-Ga　2　O　3　nanowires　was　tentatively　reviewed.The　discussions　centered　on:i)　the　growth　techniques　and　mechanisms　of　β-Ga　2　O　3　nanowires,including　but　not　limited　to　carbothermal　reduction,laser　ablation,chemical　vapor　deposition　in　vapor-liquid-solid　or　vapor　solid　modes,thermal　evaporation　and　RF　magnetron　sputtering　of　powder　target;　ii)　the　synthesis　of　β-Ga　2　O　3　nanowires　catalyst　and　impact　of　dopants,including　Pd,In　and　rare-earth　metals　on　properties　modification;　and　iii)potential　applications　in　fabrication　of　photodiodes,solar-blind　detectors　and　gas　sensitive　detectors.In　addition,the　existing　technical　problems,possible　solutions　and　development　trends　of　β-Ga　2　O　3　nanowire　array　were　also　briefly　discussed　in　a　though　provoking　way.　©　2018,　Journal　of　Vacuum　Science　and　Technology　Publishing　House.　All　right　reserved.