ZrB₂–SiC ceramics were prepared using hot oscillatory pressing (HOP) and hot pressing (HP) processes, and the effect of oscillatory pressure on the densification and mechanical properties of ZrB₂–SiC ceramics was investigated. The results have shown that compared to using the HP process to fabricate ZrB₂–SiC ceramics, the densification rate of HOP process has been improved significantly, and the interface between ZrB₂ and SiC is well bonded; The hardness and fracture toughness of the ZS30 sample prepared by the HOP process reached 21.1 GPa and 7.3 MPa·m^1/2, respectively, which were significantly improved compared to the samples prepared by the HP process under the same sintering parameters. HOP has shown good development prospects in the preparation of high-performance ZrB₂–SiC ceramics.