Based on the 54-year yearly grid precipitation data of Chinese mainland from 1961 to 2014,we used the inverse distance weighted interpolation method to analyze the spatial-temporal distribution of precipitation. We classified the annual precipitation into different quantities and summarized the variation of the area of each precipitation zone in the 54 years. This paper introduced the concept of precipitation barycenter and calculated the annual precipitation barycenter and its movement features. The results showed that the area variation and barycenter movement of each precipitation zone were in a random sequence with obvious fluctuations. The annual precipitation zone of 400~600 mm took up the largest area proportion, and showed the most significant trend and the largest fluctuation. Under the significant effect of precipitation variability in northeast and north China, the precipitation barycenters were highly discrete in the northeast-southwest direction,and can indicate regional climatic anomaly. The latitudinal direction (Y-coordinate) of the annual precipitation barycenter showed the greatest correlation with the area of the>1 400 mm precipitation zone. The longitudinal direction (X-coordinate) showed no significant correlation. So Thus, at this space spatial scale (Chinese mainland China) and time scale (54 years from 1961 to 2014) scale, the overall precipitation pattern did not change significantly.