Abstract: At present, in view of the limitation of the understanding of the atmospheric movement, the climate change projection depending completely on general circulation model (GCM) is in an immature period, and relying on the anomalous characteristic of early general circulation is still one of the main methods, particularly in provincial and regional meteorological observatory. So investigating on the prediction clue from early circulation anomalies is very important work, which may provides some scientific evidences to accurately predict the following climate anomalies. A lot of previous researches show the close inter-season linkage between early wintertime circulation and the following summer climate anomalies, the precipitation variations in different regions are not only the significant difference, but also the relationships between them, and early circulation anomalies are distinctly different which needs to be further investigated. Yunnan Province is located in Asian monsoon region and is commonly affected by East Asian monsoon and South Asian monsoon. Its climate anomaly is very complicated and different from those in other regions. Further study on the relationship between early circulation anomalies and Yunnan summer precipitation will be beneficial to improving the forecast accuracy and providing the accurate weather information for government's decision-making to prevent and mitigate the damages resulting from disastrous weather. Based on the monthly NCEP/NCAR reanalysis dataset from 1948 to 2004, 124 stations rainfall from 1961 to 2004 and sea surface temperature of the UK Hadley Center from 1948 to 2003, the temporal and spatial variation features of Yunnan summer (JJA) precipitation are firstly analyzed by using EOF and Morlet wavelet analysis method. Secondly, the relationship between the rainfall and preceding general circulation, air temperature is further investigated by using correlation and composite analysis methods. Yunnan summer precipitation in different regions trends to have the similar variation, and has a significant inter-annual variability and period circle feature with 2 and 4 years. The circulation anomalies in mid-high latitude region of Eastern Asia and atmospheric thermal situation from low-high layer in tropical India Ocean and Pacific Ocean in preceding December and January, particularly in January are significant signals indicating the following climate variation of Yunnan. The rainfall increases when East Asian trough deepens and East Asian winter monsoon (EAWM) strengthens, air temperature from low-high layer is cold. The opposite situation occurs when early East Asian trough weakens, EAWM weakens, and air temperature from low-high layer is warm. Furthermore, the anomalous characteristics of SST in tropical Ocean and its possible effect on the linkage relationship between East Asian winter monsoon and summer monsoon are also investigated. The results show that SSTA in tropical Indian Ocean and western Pacific Ocean keep unchanged from winter to summer, which will impact possibly EASM and rainfall in Yunnan summer by changing land-sea thermal contrast.