High-entropy ceramics (HECs) are solid solutions of inorganic compounds with one or more Wyckoff sites shared by equal or near-equal atomic ratios of multi-principal elements. Although in the infant stage, the emerging of this new family of materials has brought new opportunities for material design and property tailoring. Distinct from metals, the diversity in crystal structure and electronic structure of ceramics provides huge space for properties tuning through band structure engineering and phonon engineering. Aside from strengthening, hardening, and low thermal conductivity that have already been found in high-entropy alloys, new properties like colossal dielectric constant, super ionic conductivity, severe anisotropic thermal expansion coefficient, strong electromagnetic wave absorption, etc., have been discovered in HECs. As a response to the rapid development in this nascent field, this article gives a comprehensive review on the structure features, theoretical methods for stability and property prediction, processing routes, novel properties, and prospective applications of HECs. The challenges on processing, characterization, and property predictions are also emphasized. Finally, future directions for new material exploration, novel processing, fundamental understanding, in-depth characterization, and database assessments are given.

高熵陶瓷（HEC）是具有一个或多个Wyckoff位点的无机化合物的固溶体，该Wyckoff位点由相等或近似相等的多主要元素的原子比共享。尽管处于起步阶段，但这种新型材料家族的出现为材料设计和属性定制带来了新的机遇。与金属不同，陶瓷的晶体结构和电子结构的多样性为通过带结构工程和声子工程进行性能调整提供了广阔的空间。除了在高熵合金中已经发现的增强，硬化和低热导率外，还发现了诸如大介电常数，超离子电导率，严重的各向异性热膨胀系数，强电磁波吸收性等新特性。 HEC。作为对这一新兴领域快速发展的回应，本文对HEC的结构特征，稳定性和性质预测的理论方法，加工路线，新颖性质以及预期应用作了全面综述。还强调了处理，表征和特性预测方面的挑战。最后，给出了新材料探索，新颖处理，基本理解，深入表征和数据库评估的未来方向。并且还强调了属性预测。最后，给出了新材料探索，新颖处理，基本理解，深入表征和数据库评估的未来方向。并且还强调了属性预测。最后，给出了新材料探索，新颖处理，基本理解，深入表征和数据库评估的未来方向。