Abstract: Based on land use grid data of Huai'an City from 2010 to 2023, a land use transition matrix and a coupling degree measurement model for production-living-ecology function were employed to reveal temporal evolutionary characteristics of production-living-ecology spaces and their coupling coordination relationships in Huai'an City．Results indicated that from 2010 to 2023, production space dominanted land use type in Huai'an City, with 53%～57% of total area．A notable transformation trend from production space to living space and ecological space was progressively intensifying, while ecological space's functional conversion maintaining relative dynamic equilibrium．Compared to 2010, high-level coupling stage in Huai'an City increased from 42.16% to 45.82% by 2023, while the extreme coupling coordination degree rose from 48.22% to 50.25%．Spatially, low coupling degree and coordination values were primarily concentrated in western and northern parts of Huai'an City, whereas high values were mainly observed in northern-central and southern regions．In recent years, massive production spaces in Huai'an City have been converted to rural living space, while other spatial functions have undergone limited bidirectional transformations．This asymmetric spatial functional transformation has led to increased ecological vulnerability in single-functional zones, resulting in lower coupling and coupling coordination degrees within these regions．