This book introduces the author's work on ceramic microbeads and discusses the specific application of new ceramic microbeads. The whole book consists of two parts: the first part describes the preparation of millimeter and sub-millimeter solid ceramic microbeads and its application in the fields of grinding media, pen beads and competitive sports; the second part introduces the preparation of micro/nano hollow ceramic microbeads, including preparation of hollow sphere ceramics, application of micron-sized hollow ceramic microspheres in thermal insulation materials, foam glass, adsorption filtration, sustained release, etc.