Abstract: The cubic climate， dry clear， drought and low temperature were the main factors affecting the high and stable yield of wheat in Yunnan. In order to provide more objective， scientific theory for wheat planting in Yunnan， regionalization test of climate ecotype was carried out and the regionalization results were comprehensively reviewed based on the temporal and spatial distribution of rainfall， temperature （accumulated temperature） and sunshine hours in wheat growth period （from October to May） and their correlation with growth adaptation， using principal component analysis of SPSS and GIS technologies. The results showed that the eco-climates for wheat planting in Yunnan were divided into four types: northern-central cold wheat growing area， central semi-arid wheat growing area， central semi-humid wheat growing area and southern warm-wet wheat growing area， Therein， the central semi-arid wheat-growing area was the most suitable region and priority development area for wheat planting in Yunnan.

Key words: Yunnan, wheat growing areas, principal component analysis, eco\|climate types, regionalization, evaluation