Based on daily precipitation data of 31 meteorological stations in the Guangdong-Hong Kong-Macao Greater Bay Area (GBA) from 1961 to 2014, the Mann-Kendall nonparametric test method, Hurst exponent, wavelet analysis method, empirical orthogonal function (EOF) decomposition method and other methods were adopted to analyze the spatiotemporal evolution of annual and seasonal precipitation in the area. The results showed that the precipitation in the GBA fluctuated greatly from 1961 to 2014, and the spatiotemporal distribution was uneven. Annual, winter and spring precipitation showed insignificant upward trend, while autumn seasonal precipitation showed insignificant downward trend. Abrupt changes of spring and summer precipitation occurred during 1964-1965 and 1965-1966. The overall trend of precipitation will keep the same as the past. The average period length of the system is 4.a, 6.a, 8.a, 10.a, and 11.a. The annual precipitation change has a main period of 28.a and secondary periods of 18.a, 13.a and 6.a. In general, the annual precipitation showed a decreasing trend from southeast to northwest. The evolution of precipitation in the GBA is basically consistent across the whole region. Secondly, precipitation in the eastern coastal area (including the northwestern Fengkai and Huaiji) and the inland area are inversely distributed.