The application discloses hafnium / zirconium 2-pyridinecarboxylate complexes, a preparation method and application thereof, and belongs to the technical field of compound preparation. The hafnium / zirconium 2-pyridinecarboxylate complexes provided by the application have both the chelating characteristics of a ligand and the stability of hafnium and zirconium. The dielectric constant of the complexes is 7-9 at a medium-temperature stage (123-223 DEG C) and a low-medium frequency (100Hz-100kHz), the dielectric loss is extremely small, and the complexes can stably exist at 230 DEG C. Therefore, the complexes can be widely applied to the preparation of new energy automobile parts, power equipment precision insulation parts and industrial equipmentdielectric insulation / transmission parts. The preparation method of the complexes is simple in operation and is beneficial to actual production.