Abstract: Objective To analyze the output efficiency of medical services in the Guangdong‐Hong Kong‐Macao Greater Bay Area, and provide reference suggestions for the high‐quality development of regional health development. Methods Collecting the panel data of health resources and services in Guangdong‐Hong Kong‐Macao Greater Bay Area from 2015 to 2020, the BCC model of data envelopment analysis （DEA） was used to analyze the medical service efficiency of each evaluation unit and the Malmquist index was used to make a vertical comparison. Results From 2015 to 2020, the number of licensed （assistant） doctors, registered nurses, and beds in the Guangdong‐Hong Kong‐Macao Greater Bay Area increased by 6.9%, 6.9%, and 4.2% annually, the total number of visits and discharge patients declined for the first time in 2020 after years of continuous growth. In 2020, five regions including Foshan showed DEA efficiency, three regions including Zhuhai showed DEA invalid, all the DEA invalid units had insufficient output or redundant input. From the perspective of year, the total factor productivity change index （TFP） was greater than 1 in 2018-2019, and less than 1 in other years. From the perspective of regions, TFP of 11 evaluation units were less than 1. Conclusions The medical and health resources in the Guangdong‐Hong Kong‐Macao Greater Bay Area have steadily increased year by year, and the quantity of medical services dropped for the first time on the basis of long‐term growth. There were differences in service efficiency between the internal evaluation units of Guangdong‐Hong Kong‐Macao Greater Bay Area. Technological change was the bottleneck restricting the improvement of total factor productivity. Regional linkage needs to be strengthened to further improve the efficiency of medical services.

Key words: Service efficiency, DEA, Malmquist, Guangdong‐Hong Kong‐Macao Greater Bay Area