Abstract:The main characteristics of the general atmospheric circulation in April 2022 are as follows. There was one polar vortex center in the Northern Hemisphere, weaker than usual. The circulation in middle high latitudes showed a three wave pattern, and there was a positive anomaly of the geopotential height over China. The strength of Western Pacific subtropical high was weaker than that in normal years. The monthly mean temperature was 12.4℃, 0.9℃ higher than normal, becoming the fifth highest in records since 1961. The monthly mean precipitation amount was 45.7 mm, 4.8% more than normal, of which the precipitation in the southwest of China was significantly higher than in normal years. Only one cold air process appeared in this month. Large scale of regional rainfall processes occurred twice in China this month, and some regions were attacked by severe thunderstorm and hail disaster. In addition, northern China experienced three sand dust weather events, and the hint of drought was found in the provinces of Henan, Shaanxi, Shanxi and Shandong, developing.