The invention discloses polyarylether containing pyridine pendant groups and a preparation method thereof and relates to a chemical material and a preparation method thereof. The preparation method comprises the steps of adopting bisphenol monomers and aromatic dihalogen monomers containing pyridine pendant groups as materials and making same to be subjected to polymerization at high temperature, azeotropically dehydrating during reaction, adding a solvent to a system for diluting after reaction, pouring a polymer solution into a precipitant, precipitating out a polymer under stirring, and filtering and separating to obtain the polymer. The polymer is high in mechanical strength, soluble, good in film-forming property and good in chemical stability, the polarity of molecular chains of polyarylether and cohesion and adhesion of the polymer can be improved, and the polymer has a promising application prospect in the application fields requiring high-temperature-resistant high-performance materials, such as composites, paints, coatings and coating layers; therefore, this polyarylether containing pyridine pendant groups has a very promising application prospect.