In　recent　years,　the　emerging　Janus　materials　have　received　more　and　more　attention　due　to　their　special　wetting　structure.　With　the　deepening　of　people＇s　understanding　and　research　on　Janus　composite　materials,　there　are　more　and　more　corresponding　preparation　technologies,　and　the　application　fields　are　also　expanding.　The　article　briefly　introduced　the　directional　transport　mechanism　of　Janus　hydrophilic/hydrophobic　composite　materials;　focused　on　the　preparation　methods　of　Janus　hydrophilic/hydrophobic　composite　materials,　including　electrospinning,　material　composite,　phase　separation,　photochemical　modification,　chemical　deposition　etc.,　and　discussed　the　advantages　and　disadvantages　of　various　methods;　and　the　application　research　progresses　of　Janus　hydrophilic/hydrophobic　composites　were　also　summarized.　Finally,　the　preparation　technology　and　application　fields　of　Janus　hydrophilic/hydrophobic　composite　materials　were　prospected.　©　2022,　Editorial　Board　of　Polymer　Materials　Science　&　Engineering.　All　right　reserved.