Based on the monthly precipitation data of 0.5°×0.5° in Guizhou from 1961 to 2018 and the monthly global sea surface temperature data, this paper analyzes the temporal and spatial distribution characteristics of summer precipitation in Guizhou and its relationship with the previous SST, and synthetically analyzes the influence of SST anomaly on atmospheric circulation anomaly and thus on precipitation. The results show that: (1) There is no significant trend change in summer and monthly precipitation in Guizhou, and the precipitation gradually increases from the middle of northeast to southwest, and the summer precipitation anomalies in Guizhou mainly have three modes: consistent in the whole region, reversed in north and south and reversed in east and west. (2) The summer precipitation anomalies in Guizhou are closely related to the SST anomalies in the northern equatorial warm current region, the California cold current region and the mid-latitude waters of the North Pacific Ocean. (3) The significant period of the North Equatorial Warm Current Zone and the California Cold Current Zone is from June to November of last year, in which July has the most significant influence, mainly in the east and south; The mid-latitude sea area of the North Pacific Ocean was from June to July last year, in which July had the most significant impact, mainly in the northeast and southeast. (4) The relationship between SST in key sea areas and precipitation in Guizhou is not as close as that in many years.