Herein,　we　report　a　novel　method　for　batch　functionalization　of　cotton　fabric　by　co-irradiation　grafting　polymerization　of　4-aminostyrene　and　in　situ　grafting　polymerization　of　aniline　in　sequence　for　solar-driven　interfacial　evaporation.　The　functionalized　cotton　fabric　displayed　strong　absorption　of　solar　light　and　good　photothermal　conversion　property.　And　it　not　merely　exhibited　a　high　evaporation　rate　of　1.47　kg　m(-2)h(-1)　when　treating　3.5　wt%　NaCl　solution　with　evaporation　efficiency　of　97%　performed　on　a　simple　tilted　platform　(under　1　kW　m-　2　of　power　density),　but　also　showed　excellent　stability　for　outdoor　natural　evaporation　over　60　days.　Besides　that,　the　tilted　solar　evaporator　unexpectedly　exhibited　a　high　evaporation　rate　(1.38　kg　m(-2)h(-1))　in　the　saturated　NaCl　solution　(ca.26　wt%),　which　is　superior　to　those　fabric-based　photothermal　materials　in　reported　literature,　suggesting　a　great　potential　to　the　application　to　solar-driven　evaporative　crystallization　of　inorganic　salts　from　brine.　The　promising　strategy　adopted　here　could　be　employed　to　facilitate　the　scale-up　preparation　of　photothermal　cotton　fabrics　and　address　current　challenges　in　high-efficiency　and　sustainable　solar-driven　seawater　desalination,　even　zero　liquid　disposal　of　industrial　waste　brine.