This paper selects fsQCA to evaluate the coordinated development level of China's institutional elderly care resource allocation and socioeconomic, and analyzes the driving factors and development path of institutional elderly care resource allocation and socioeconomic coupling. The study found that the overall level of coordinated development between institutional elderly care resource allocation and socioeconomic development in China was not satisfactory, and there were obvious regional differences, which were mainly affected by basic conditions, inclusiveness, aging degree, economic performance, socioeconomic level and other factors. The three paths were determined to be effective in promoting the coordinated development of institutional elderly care resource allocation and socioeconomic. These paths are respectively institutional elderly care resource allocation and socioeconomic synergy type, institutional elderly care resource allocation-driven, and socioeconomic development-driven. Therefore, it is suggested that local governments, according to their own resource endowments and conditions, choose appropriate development paths, promote the rational allocation of institutional elderly care resources, improve the quality of institutional elderly care services, and provide a reasonable and healthy elderly care environment for the elderly.