This study analyzed temperature and precipitation data from 119 meteorological stations in Yunnan Province (1951-2020). The research applied the K?ppen-Geiger classification system combined with landscape pattern analysis to investigate the spatio-temporal dynamics of climate landscapes over the past seven decades. The results indicate that Yunnan Province is primarily characterized by three climate zones: warm temperate (C), cold temperate (D), and polar (E), with the warm temperate zone (C)accounting for the largest proportion. Within these zones, nine distinct climate subtypes are identified: Hot Summer Dry-Winter Warm Temperate Climate (Cwa), Mild Summer Dry-Winter Warm Temperate Climate (Cwb), Hot Summer Humid Warm Temperate Climate (Cfa), Mild Summer Humid Warm Temperate Climate (Cfb), Hot Summer Dry-Winter Cold Temperate Climate (Dwa), Mild Summer Dry-Winter Cold Temperate Climate (Dwb), Hot Summer Humid Cold Temperate Climate (Dfa), Mild Summer Humid Cold Temperate Climate (Dfb), and Polar Tundra Climate (ET), with Cwa and Cwb being the most widespread.Over the past 70 years, although the overall spatial distribution of these climate zones has remained relatively stable,significant fluctuations in areal proportions across zones were documented . Notable changes include shifts in the composition, area proportions, landscape patterns, and spatial distributions of the climate subtypes, particularly the emergence and expansion of hot summer subtypes. A significant trend is the conversion of large portions of Cwb areas to Cwa. Additionally, the maximum patch area of climate landscapes has decreased, patch shapes exhibited increased irregularity, and landscape fragmentation has increased. Furthermore, both Cwa and Cwb zones have shown a clear northward shift.This analysis of the spatio-temporal changes in climate landscapes in Yunnan Provinceoffers critical insights into climate change impacts on regional biodiversity distribution .