本文采用2008~2019年的面板数据，对珠三角城市群的经济增长质量进行全局主成分分析，评价珠三角城市群经济发展质量。结果表明：1) 珠三角城市群经济发展不平衡，经济增长质量水平存在较大差异，区域间经济增长质量差距在逐渐拉大；2) 城市之间综合质量差距增大，且城市之间两极分化趋势越来越显著；3) 珠三角城市群的第三梯度城市经济质量的增长率较高，而第二梯度城市的经济质量的增长率较低。由此，对珠三角城市群的发展提出发展建议，为中国经济转型发展提供参考。 This paper uses panel data from 2008 to 2019 to conduct a global principal component analysis of the economic growth quality of the Pearl River Delta urban agglomeration, and evaluate the economic development and change process of the Pearl River Delta urban agglomeration. The results show that: 1) the economic development of the Pearl River Delta urban agglomeration is relatively unbalanced, the quality of economic growth is quite different, and the gap in the quality of economic growth between regions is gradually widening; 2) the overall quality gap between cities is increasing, and the trend of polarization among cities is becoming more significant; 3) the economic quality growth rate of the third-gradient cities in the Pearl River Delta urban agglomeration is higher, in contrast, the economic quality growth rate of the second-gradient cities is lower. As a result, suggestions for the development of the Pearl River Delta urban agglomeration are put forward.