The　output　and　adsorption　characteristics　of　solid　adsorbents　limit　their　application　in　a　desiccant　wheel　system.　Therefore,　this　paper　proposed　a　macroscopic　green　synthesis　method　for　aluminum　fumarate　metal　organic　framework　(approximately　400　g　can　be　synthesized　in　a　single　time).　By　combining　with　other　materials,　the　dehumidification　performance　of　aluminum　fumarate　had　been　greatly　improved.　The　microporous　structure　and　dehumidification-desorption　performance　of　the　samples　were　analyzed　by　physical　characterization　and　constant　temperature　and　humidity　chamber　respectively.　Results　showed　that　at　a　relative　humidity　of　80%,　the　dehumidification　capacity　of　the　composite　material　reached　2.5　and　3.18　times　that　of　aluminum　fumarate　and　commercially　silica　gel,　respectively.　The　composite　material　can　also　achieve　a　better　desorption　effect　at　a　lower　desorption　temperature　(50　celcius),　with　a　desorption　ratio　of　82%.　This　proved　that　the　composite　material　based　on　aluminum　fumarate　had　great　potential　in　the　application.