The invention discloses a monomer for an organic electrophosphorescent polymer, which is formed by taking terminated-alkene beta-diketone as a ligand to perform complexation with metallic iridium ions, and a general formula of a structure of the monomer is shown as right, wherein R is hydrogen atoms or trifluoromethyl. Experiments prove that the monomer for the electrophosphorescent polymer is an electroluminescence material containing a polymerization activity center, can be used as an organic electroluminescence material, or is used to prepare the organic electrophosphorescent polymer.