Abstract: Coordinating the coordinated and orderly development of the three spheres of life in rural areas is an important way of breaking down the unbalanced development between villages. Against the backdrop of territorial spatial planning, spatial conflicts and adaptations of grass-roots units in villages are still prevalent, yet there is a dearth of unit-adjustment programs to promote regional coordination. The study takes Xixiu District, Anshun City, Guizhou Province, as an example, and builds a new evaluation unit based on the 'natural township-administrative district' unit to meet the demand for spatial coordination of the three aspects of life in the countryside. In order to explore the different adaptability of geographic units, administrative units and composite units to the evaluation of functional coordination, we constructed a the production-living-ecological spatial function evaluation system and a coupling coordination degree model, and used a spatial correlation model to compare the spatial relevance degree of the coupling coordination degree of the three types of units, and to identify the typical areas where the production-living-ecological spatial function spaces are in conflict with each other. The results show that the degree of coordination of production, living and ecological spatial functions shows different spatial correlations among the three types of units, and the performance is most significant in the composite unit, which indicates that the composite unit of 'natural townships-administrative districts' is more suitable to be the basic carrier for the promotion of the overall coordination of the rural area. At the same time, the areas in Xixiu District where the production-living-ecological spatial function spaces conflict with each other show obvious aggregation characteristics in space, and the study combines the results of the delineation of the composite unit, accordingly proposing a targeted strategy for the interaction of the the production-living-ecological spatial function spaces.