In recent 58 years, the interannual variation of 5~20 cm ground temperature presents an upward trend in Qiannan. The trend rate of climate increases gradually with the increase of depth, the average ground temperature of shallow layer increases obviously in recent 10 years. The periodic distribution of ground temperature is different in each layer. The ground temperature of the four seasons shows an increasing trend, and the climatic tendency rate gradually increases with the increase of depth. The mean monthly ground temperature variation shows a single peak. The ground temperature decreases with the increase of the depth in the warm month and increases with the increase of the depth in the cold month. The distribution of shallow ground temperature increases gradually from north to south.