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This invention discloses an adsorbent based on MOF materials and its processing technology, belonging to the field of adsorbent technology. The process includes the following steps: adding zirconium-based MOF-Fe3O4 to DMF, ultrasonically mixing, adding terephthalaldehyde, mixing, adding acetic acid, reacting at room temperature for 48-72 h, magnetically separating the precipitate, washing, and vacuum drying to obtain aldehyde-based zirconium-based MOF-Fe3O4; placing chromium nitrate nonahydrate and terephthalic acid in DMF, stirring and mixing, adding modified SBA-15, reacting at 180-220℃ for 12-24 h, cooling and filtering, washing and drying to obtain chromium-based MOF-SBA-15; adding aldehyde-based zirconium-based MOF-Fe3O4 and chromium-based MOF-SBA-15 to ethanol, adding acetic acid, reacting at room temperature, magnetically separating, washing and drying to obtain the MOF-based adsorbent. The MOF-based adsorbent prepared by this invention can be applied to the concentration and treatment of typical industrial VOCs waste gas.