Yuanmou is a typical dry -hot valley basin in the Jinshajiang River basin in Yunnan province.The daa of thetemperature，precipitation， sunshine and relative humidity in 125 counties of Yunnan Province were seleeted to analysis principalcomponent， temperature and precipitation in Yuanmou County during the special duration in recent 54 years, which were taken todo climate tendency and wavelet analysis.The results show that Yuanmou is a region with high heat and strong sunlight, the mostdry and heat resourees efficient use in Yunnan Province.The score of the heat factor principal component is the highest in thenorth of the middle Yunnan valley basin; the score of the light sunshine factor principal component is the highest in Yunnan andthe score of the dry and wet factor is the lowest in Yunnan Province.The trend of the annual precipitation change is not obvious(-0.64 mmJa), of which the change cycles are 26a，16a,2-4a; There is an obvious change trend of the average temperature insummer with -0.009℃a,of which the change cycles are 2a， 17a and 4-6a;There is no obvious change of the average minimumtemperature in the coldest duration with -0.036 Ca, of which the change cycles are 19a,4-6a; The change cyeles of the averagetemperature between November and Februarye are 8a and 3a.