The daily observed gridded precipitation data were obtained from the China Meteorological Data Service Center (http://www.nmic.cn/en) on 04-08-2021 but are currently not available at this website. These data have 128 columns and 72 rows with longitude and latitude starting from 72°E and 18°N, respectively. Spatial resolution is 0.5°×0.5°. Here, we provide these data during 1961-2021 in two study regions: central China (111°-116°E, 32°-37°N) and eastern China (118°-123°E, 28°-34°N). To make it easier for everyone to reuse the data, we select these data with adding two degrees in each direction of two regions. The selected data have 19 columns and 19 rows (21 columns and 19 rows) in central (eastern) China with the grid center's longitude and latitude ranging from (109°-118°E, 30°-39°N) to (116°-125°E, 26°-36°N).