Solar-driven　interfacial　evaporation　technology　(SDIE)　was　previously　proposed　to　produce　freshwater　in　seawater　desalination.　With　the　environmentally-friendly　merit　of　solar　energy,　researchers　tried　to　apply　this　technology　in　other　water　treatments.　However,　the　components　in　different　water　matrices　are　complex,　various　contaminants　accumulate　on　the　interface　reducing　evaporation　efficiency　or　evaporating　with　water　vapor　affecting　the　produced　water　quality.　The　photocatalysis　has　good　performance　on　the　removal　of　these　pollutants　in　water.　Since　both　processes　require　the　participation　of　light,　researchers　have　proposed　coupling　solardriven　interfacial　evaporation　with　photocatalysis　to　better　solve　the　problem　in　water　treatment.　This　review　summarizes　the　application　of　the　coupled　processes　in　water　treatment.　Firstly,　the　mechanisms　of　interfacial　photothermal　conversion　and　photocatalytic　degradation　of　pollutants　are　reviewed.　Subsequently,　the　applications　of　the　coupled　processes　in　water　production,　contaminants　removal,　and　disinfection　for　water　treatment　are　summarized.　The　results　show　that　the　condensate　collected　through　the　coupled　process　meets　drinking　water　quality　standards.　Additionally,　the　coupled　process　significantly　degrades　volatile　organic　compounds　(VOCs),　non-volatile　organic　compounds　(NVOCs),　and　disinfects　bacteria,　thereby　preventing　surface　contamination　at　the　photothermal　interface.　Furthermore,　the　application　of　the　coupled　processes　for　green　fuel　production　from　water　treatment　is　also　discussed.　This　production　process　is　based　on　water-catalyzed　hydrogen　production　and　carbon　dioxide　reduction.　Finally,　current　challenges　and　future　perspectives　of　the　coupled　processes　are　examined,　aiming　to　provide　theoretical　foundations　for　future　research　in　this　field.