Based　on　literatures　relevant　to　application　of　big　data　included　in　the　Web　of　Science　database　as　the　data　sources,　this　paper　used　CiteSpace　as　the　research　tool　to　visualize　the　distribution　of　keywords,　evolution　of　hot　spots　and　evolution　rules.　After　that,　it　analyzed　the　hot　spots,　contexts,　tool　technologies　and　application　fields　of　application　of　big　data,　so　as　to　reveal　the　current　situation　of　researches.　The　study　indicates　that　existing　researches　involve　a　wide　range　of　disciplines　and　technology　is　still　the　center　of　current　researches.　At　present,　the　majority　of　the　studies　all　focused　on　the　field　of　management,　network,　information,　medicine,　health,　environment,　energy　and　etc.　Overall,　technology　is　still　the　important　part　in　current　research　on　application　of　big　data.　Technical　tools,　such　as　data　mining,　algorithms,　cloud　computing,　mapreduce,　hadoop,　machine　learning　all　provide　strong　supports　for　the　practical　application　of　big　data.　©　2017　Association　for　Computing　Machinery.