An eco-friendly and green rare-earth hybrid material, Eu^(3+)-ZIF@IL, was synthesized using ionic liquids as a medium through a straightforward hydrothermal method. This material maintains the inherent stability and high porosity of ZIFs while enhancing fluorescence detection capabilities via the integration of ionic liquids. This innovation has yielded a probe with superior fluorescent properties, making it especially effective for the recognition and detection of biomolecules. In practical applications, Eu^(3+)-ZIF@IL exhibits high selectivity and sensitivity towards lysine, achieving effective analysis in complex biological matrices with a detection limit as low as 26.42 μM. This demonstrates its outstanding performance and significant potential in the market for fluorescent probes.