Total inorganic cesium lead halide perovskite (CsPbX3 (X=Cl、Br、I)) quantum dots have high stability, high color purity and high quantum yield, which has attracted wide attention. However, the toxicity of component lead in CsPbX3 quantum dots limits the further application of CsPbX3 quantum dots. Meanwhile, how to further improve its performance and stability also attract much attention. In this paper, a brief introduction of CsPbX3 quantum dots is presented. Furthermore, the research progress of selecting appropriate methods, including doping to control grain size and coating passivation to improve stability (coating agent, passivating agent, technical methods, etc.), is reviewed. Finally, the development direction of CsPbX3 quantum dots in the future is prospected.