Abstract: The coordinated development of ecotourism and resource and environmental carrying capacity is of significant importance for implementing the national ecological civilization construction and achieving local sustainable development. The study of the symbiotic relationship between the two can provide a scientific basis for promoting a high-quality ecotourism. In this article, the entropy weight method was used to determine the weights of indicators. An evaluation system was constructed for the coupling and coordination of eco-tourism and resource and environmental carrying capacity. A total of 24 counties in Hunan Province from 2014 to 2022 were calculated. The spatiotemporal evolution characteristics of the coupling and coordination were analyzed. The results indicated that: (1) The quality level and the coupling coordination in the Dongting Lake area within Hunan Province exhibited an upward trend, yet significant disparities existed for different counties. (2) The level of coupling coordination presented a spatial distribution pattern of "high in the center and low on the periphery", and the level of ecological tourism development positively correlated with the carrying capacity of resource and environment. (3) According to the results, the 24 counties could be classified into three development types: coordinated and balanced type, well-running type, and uncoordinated and lagging type. Optimizing the development path of ecological tourism and facilitating the complementary advantages and resource sharing among counties would be conducive to the high-quality development of the entire rural area and to promote rural revitalization in the Dongting Lake area.