High-entropy ceramics (HECs) usually refer to multi-principal solid solutions formed by five or more ceramic component, which possess many superior properties, such as extremely high hardness and modulus, low thermal conductivity and good oxidation resistance, and exhibit great potential in aerospace, high-speed cutting tools and other harsh environments. However, the current research on HECs is still in its infancy. The improvement of theoretical criteria and composition design theory, the establishment of solid solution coupling mechanism, the optimization of preparation method and the application of high throughout computation are urgently needed in the future. This paper summarized the research progress of HECs, which mainly introduced material design, preparation technology and performances of HECs, and the future development of HECs was prospected.