Nanomaterials often possess novel properties and provide model systems to understand nanoscience phenomena. Given the intimacy between the structural features and functions of nanomaterials, the development of facile synthetic methods is still an urgent necessity. Molten-salt synthesis (MSS) method is one of those approaches with simplicity, versatility, and cost-effectiveness. While bulk materials have long been prepared using flux method, uniform nanomaterials prepared by the similar MSS technique has only arisen relatively recently, that is, within the current century. Over the years, our laboratory has applied this method to make various nanomaterials, especially those of transition-metal oxides. In this presentation, various examples will be demonstrated, including materials with perovskite, fluorite, pyrochlore and spinel structures, along with relevant growth mechanism studies and the property measurements of these synthesized nanomaterials. Therefore, the MSS method will continue becoming widely disseminated and broadly adopted as a facile, reliable, and scalable synthetic approach for nanomaterials.