BACKGROUND: In recent years, fluorescence sensing technology by rare-earth metal-organic frameworks (Ln-MOFs) as probes has garnered extensive attention in the domains of environmental quality testing, pollutant reduction, and biomolecule analysis because of its non-disruptive nature, rapid response, and high sensitivity. The research on aided magnetic controlling has further advanced the industrial value of Ln-MOFs, but the accomplishment of high specificity and rapid recovery still is a challenge for the magnetic Ln-MOFs in practical applications. RESULTS: A magnetic Ln-MOFs, Fe SIGNIFICANCE AND NOVELTY: In this paper, a novel synthesis scheme for magnetic Ln-MOFs was proposed, and the prepared Fe