Abstract: They are basis master rural production-living-ecological function level and reveal the complex relationship among them for rural planning and development in China. In this paper, we established an index system for rural production-living-ecological function with the production-living-ecological space theory, multifunctional land theory, based on the coupling coordination model was built. Therefore, we calculated the level of production, living, and ecological functions, coupling degree and coupling coordinate degree(2005,2018), conducted spatial comparison and temporal analysis of 45 counties in Jiangsu, the results are shown: (1) The level of production, living, and ecological functions were improved in rural from 2005 to 2018; (2) The production-living-ecological, production-living, production-ecological, and living-ecological function coupling degree’s types were all coordination coupling; (3)There were three types of coupling coordination degree, grudgingly coordination, elementary coordination and moderate coordination appeared in rural production-living-ecological. In the time dimension, it was evolved from grudgingly incongruous type to higher level coupling, coordination type, as an inverted “U” form, in space, it exhibited significant difference among 45counties. There were obvious differences of coupling coordination status among production-living, production-ecological, and living-ecological functions and a clear North-South gap. It is going to focus on rural green-production and improving living environment, as well as overall planning and narrowing the gap of between the north and south in the future.