This paper aims to introduce the principle, classification and application as well as the latest research progress of rare earth europium organic complexes，and provide certain ideas and basis for the research and development of high performance rare earth europium complexes. By referring to the various research reports on rare earth europium organic complexes of scholar at home and abroad in recent years, the main ligand types and applications of rare earth europium organic complexes were sorted and summarized. There were four main types of rare earth europium organic complexes containing β-diketones, carboxylic acids and carboxylates, organic polymers and supramolecular macrocycles, and they were used in fluorescent materials, luminescent materials, magnetic materials and biology, respectively. Europium/organic polymer complexes can combine the advantages of Eu3+ which have excellent fluorescence performance and polymers with convenient processing and shaping ability, and it is expected to become a new functional material on the premise of improving compatibility with polymer materials.