Abstract:Based on the relevant data of the economic, technological and financial indicators of Hong Kong, Macao and the Pearl River Delta from 2009 to 2017, this paper uses entropy method to build a comprehensive evaluation index system, and analyzes the development level and coupling coordination among the three systems of the three regions. The results show that: (1) there are differences in the level of economic, technological and financial development in Guangdong, Hong Kong and Macao. The level of financial development in Hong Kong is significantly higher than that in the other two regions. In the field of science and technology, the Pearl River Delta region has an absolute advantage, and the three systems in Macao are relatively balanced. From the perspective of three systems, with the passage of time, the order of regional comprehensive development level is Pearl River Delta > Hong Kong > Macao (2) the urban economy, technology and finance in Iguanodon Hong Kong Macao Bay area are highly coupled, that is, the development of regional internal economy, technology and finance are highly correlated, and the coupling and coordinated development degree of the systems is continuously strengthened with the passage of time, and finally they are all excellent Quality coordinated development. Finally, the paper provides corresponding policy suggestions for the better development of regional economy.