The color of leather and leather products reflects people"s aesthetic appeal, and is usually the primary evaluation feature in purchasing leather products such as shoes, leather clothes, bags and so on. Therefore, leather dyeing is one of the most important processes in the leather making process. In view of the uneven dying, low rubbing fastness and washing fastness exposed in the traditional dyeing, this article mainly introduced the methods to improve leather dyeing performance and clean leather dyeing technology. Firstly, common leather dyes and the principles of leather dyeing are briefly overviewed. Then two methods to improve the dyeing performance of leather, namely dyeing pretreatment and dyeing auxiliaries are discussed. The applications of ultrasonic technology, microwave technology, supercritical CO₂ technology, microcapsule technology, nano technology, electrochemical technology, plasma technology in leather dyeing are introduced. Finally, the development trend of leather dyeing is prospected.