The invention relates to a raschig ring filling material, which belongs to the technical field of petroleum chemical mass transfer separating equipment. The raschig ring filling material comprises a tubular body, the symmetrical trumpet-shaped flarings are arranged at two ends of the tubular body; a corrosion resisting coating is sprayed on the surface of the raschig ring filling material, the corrosion resisting coating comprises the following components by weight percentage: 10-20% of terephthalate epoxy resin, 10-15% of polyvinyl formal, 11-15% of cross-linking agent, 6-8% of anhydrous auxiliary agent, 2-3% of catalyst, and the balance of water. The symmetrical trumpet-shaped flaring are arranged at two ends of the tubular body, each filling material enables point contact while stacking, distribution is more uniform, porosity is increased, channeling and wall flow phenomena can be effectively prevented, wetting on the surface in the filling material is convenient due to trumpet-shaped flaring, and production efficiency is increased.