Using the monthly precipitation data of 13 precipitation observation points from 1956 to 2014 in Xuchang City, combined with the linear regression, Mann-Kendall rank correlation test, cumulative anomaly and Morlet continuous complex wavelet analysis, the evolution characteristics of the precipitation at different time scales in Xuchang City were studied. The results show that the annual precipitation and the precipitation in rainy season and dry season in Xuchang decrease non-significantly at the rates of 8.7 mm/10a, 1.6 mm/10a, 7.3mm /10a respectively. The annual precipitation, the rainy season and dry season, precipitation show a spatial pattern that increases from northeast to southwest. The annual precipitation reduced abruptly in 1964, and the precipitation of the rainy season increased and dry season reduced respectively in 1999. The first, second and third major cycle changes of annual precipitation respectively were 14a, 22a, and 5a. The precipitation of the rainy season and dry season also have several time scale periodic variation. According to the features of the major cycle changes, Xuchang city will enter a period of relatively abundant precipitation. The research results can provide basis for flood control and drought relief, and water ecological civilization construction in Xuchang City.