Abstract: Analyze The characteristic and the law of changes of the climate and temperature in winter in the southern part of Guizhou and research the periodic changes in winter with all the temperature data from the 12 stations in the southern part of Guizhou in the last 51 years,the linear trend and the method of wavelet transformation.The results show that:The temperature in December,February,the average and extreme minimum temperature have shown the tendency of temperature rise in the last 51years.The warming trend in February reached 0.46 ℃/10a,the average minimum temperature reached 0.23 ℃/10 a,both of them rise obviously; the temperature in January shows a decreasing trend,the trend rate of it is -0.13 ℃/10 a,the average maximum and the extreme maximum temperature showed a weak cooling trend.There exist the Inter-annual Oscillation and Decadal Oscillation for the temperature in winter in the southern parts in Guizhou province.