Recently, it has been discovered that the <i>AB</i>(N,O)<sub>3</sub>-type perovskite oxynitrides exhibit excellent dielectric, ferroelectric, and photocatalytic properties, promising for applications in the fields of optoelectronics, energy storage, and communication. <xref ref-type="fig" rid="Figure1">Figure 1</xref> illustrates the crystal structures of conventional <i>AB</i>O<sub>3</sub> (with CaTiO<sub>3</sub> taken for example) and <i>AB</i>(N,O)<sub>3</sub> (with LaTiN<sub>2</sub>O taken for example) perovskites. Due to the differences in charge, ionic radius, and covalent bonding between N<sup>3−</sup> ion and O<sup>2−</sup> ion, the N substitution for O enhances the <i>B</i>(N,O)<sub>6</sub> octahedron tilting, giving rise to exotic properties and functionalities. However, the current fabrication process for this type of material is rather time-consuming, leading to products with an appreciable quantity of impurities. In this study, using oxide precursors and sodium amide as the nitrogen source, high-purity perovskite-type oxynitride CeTaN<sub>2</sub>O bulk materials are successfully synthesized under high-temperature and high-pressure conditions provided by a cubic-anvil press. The synthesis time decreases to 1 h, achieving rapid production. The lattice structure and physical properties of the obtained samples are comprehensively investigated. X-ray powder diffraction experiments and subsequent Rietveld refinement indicate that the title material shows an orthorhombic crystal structure with the space group of <i>Pnma</i>. The X-ray absorption spectra confirm the charge configuration and the anion composition as Ce<sup>3+</sup>Ta<sup>5+</sup>N<sub>2</sub>O. Magnetization and specific heat measurements reveal that the exchange interactions are mainly antiferromagnetic, with a potential magnetic transition below 2 K. The electrical transport data demonstrate typical semiconductor behaviors, which can be further explained by a three-dimensional variable-range hopping model. Our study paves the way for putting this exotic perovskite oxynitride into practical applications.