NOVELTY - A macromolecule-supported phytic acid metal-organic framework material composite film comprises phytic acid metal-organic framework material which is film material, and macromolecule which is perfluorosulfonic acid polyelectrolyte.    USE - A macromolecule-supported phytic acid metal-organic framework material composite film for direct methanol fuel battery film (claimed) and hydrogen-oxygen fuel battery.    ADVANTAGE - Macromolecule-supported phytic acid metal-organic framework material composite film has good proton conduction characteristics.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of macromolecule-supported phytic acid metal-organic framework material composite film which involves performing modification reaction of terephthalic acid, chromium nitrate nonahydrate, hydrofluoric acid, and water using trifluoromethanesulfonic anhydride and concentrated sulfuric acid in which molar ratio of terephthalic acid, chromium nitrate nonahydrate, hydrofluoric acid, and water is 1:1:0.825:266, reacting at 220 degrees C and saturated vapor pressure for 8 hours, cooling to 40 degrees C with cooling rate of 10-20 degrees C/minute, centrifugal washing, vacuum drying at 50-80 degrees C for 24 hours to obtain chromium(III) terephthalate (MIL101) metal-organic framework material, adding metal-organic framework material in flask, sequentially adding 200 times by mass N,N-dimethylformamide, 1 wt.% aqueous ammonium fluoride solution, ethanol, and dichloromethane, boiling for 11-13 hours, centrifugal drying to obtain purified metal-organic framework material, adding into reactor, vacuum degassing at 80-120 degrees C for 11-13 hours, cooling to 60-80 degrees C, adding 0-50 wt.% phytic acid solution under vacuum in which concentration of metal-organic framework material in phytic acid solution is 5 g/100 ml, exposing in atmosphere, stirring for 5.5-6.5 hours, centrifuging, washing supernatant until neutral, drying to obtain phytic acid metal-organic framework material, ultrasonically dispersing phytic acid metal-organic framework material to N,N-dimethylacetamide at room temperature for 8-10 hours, adding macromolecule, stirring at room temperature for 10-24 hours to obtain casting solution in which mass:mass:volume ratio of metal-organic framework material, macromolecule, and N,N-dimethylacetamide is 0.04:1:6.5-0.16:1:6.5, casting the casting solution on glass plate, oven drying, performing heat treatment at 110-120 degrees C for 1-2 hours, peeling off film, placing 2 M sulfuric acid for acid treatment for 10-24 hours, rinsing with deionized water until washing liquid is neutral, and vacuum drying at 50-60 degrees C.