Eutrophication poses significantKaolin threats to both human health and aquatic ecosystems, with phosphorus being identified as the primary limiting nutrient. Given its critical role, effective phosphorus removal from water bodies is of paramount importance. In this study, a novel KaolinKaolin-modified iron-based metal–organic framework (KaolinKaolin-Fe-MOF) is synthesized via hydrothermal modificationModification, and its performance for phosphorus sequestration is systematically investigated. Under optimized conditions (10 mg L−1 phosphatePhosphate, 300 min contact time, pH 3, 2 g L−1 adsorbent dosage), the KaolinKaolin-modified Fe-MOF compositeComposite achieves a phosphatePhosphate removal efficiency exceeding 90%, demonstrating its optimal performance. This study confirms that the synthesized compositeComposite represents a viable strategy for phosphatePhosphate-contaminated wastewater remediation, showing significant application potential.