钙钛矿发光二极管具有效率高、色纯度高、成本低、发光波长在可见光区域连续可调等优势，在显示、照明、成像等领域具有很大的应用潜力。从钙钛矿发光二极管的基本结构与工作机制等方面入手，重点介绍提升钙钛矿发光二极管器件的荧光量子产率、光提取效率、载流子注入效率和可靠性等性能的主要技术手段，系统阐述了蓝光、绿光、红光和近红外多个波段钙钛矿发光二极管的关键参数提升方法的发展历程，简单介绍了无铅钙钛矿发光二极管的最新研究进展，探讨了钙钛矿发光二极管的技术发展动向，并对进一步提升钙钛矿发光二极管各项性能的方法与思路进行了展望。

Perovskite light-emitting diodes show great potential in the fields such as display, lighting, and imaging because of their high efficiency, high color purity, low fabrication cost, and widely tunable light emission spectra. Starting from the basic structure and working mechanism of perovskite light-emitting diodes, this review focuses on the main technical means to improve the fluorescence quantum yield, light extraction efficiency, carrier injection efficiency, and reliability of perovskite light-emitting diode devices. The development process of the key parameter improvement method for the blue, green, red, and near-infrared perovskite light-emitting diodes is systematically explained, and the latest research progress of lead-free perovskite light-emitting diodes is briefly introduced. The technology development trend of light-emitting diodes is discussed, and the methods and ideas to further improve the performance and reliability of perovskite light-emitting diodes are prospected.