Abstract: With the development of technology and emerging industries, the requirement for rare earth mineral resources is increasing rapidly. However, the large−scale and highly concentrated discharge and accumulation of rare earth tailings occupy a large amount of land resources and cause ecological damage and environmental pollution, so it has a great significance of rare earth tailings utilization. There are many ways and methods for the resource utilization of rare earth tailings, which are used for reconcentration of valuable metals such as rare earths, iron, lead, niobium and non−metallic mineral minerals such as fluorite, barite and dolomite. However, reconcentration cannot achieve the overall utilization of rare earth tailings, and tailings will still be discharged after reprocessing. For the preparation of denitration catalysts, geopolymers, porous solid materials, ceramics, ceramic particles, microcrystalline glass, cement clinker, and bricks, it can achieve the overall utilization of rare earth tailings. The rare earth metals contained in rare earth tailings give them unique properties and uses in the preparation of denitration catalysts, microcrystalline glass, ceramics and microwave absorption materials. They play irreplaceable characteristics and roles, but may be constrained by toxic and harmful components, process stability, low−cost industrial applications and continuous consumption. The ways and methods for the resource utilization of rare earth tailings each have their own advantages and disadvantages. For the chemical composition, mineral composition, and particle size of rare earth tailings, it is appropriate to tailor them to local conditions, classify them according to their quality, and carry out targeted resource utilization. Especially for the high quality and high value utilization of functional materials containing rare earth metals in rare earth tailings, it is necessary to avoid secondary pollution caused by heavy metal ions and radioactive elements in resource utilization.