Abstract: Based on the CALIPSO satellite observations from June 2006 to December 2016, the aerosol spatiotemporal distribution characteristics above the East China Seas (the Bohai Sea, the Yellow Sea and the East China Sea) were analyzed. The results indicate that:(1) Aerosols in the three seas are mainly Clean Marine, Dust and Polluted Dust, and the sum of the three percentages is nearly 90%. The predominant aerosol type is different in different seas; (2) Aerosols above each sea tend to exponentially decay as the height increases. The aerosol type changes significantly in the space below 4 km, but there exists only Dust, Polluted Dust and Smoke above 4 km; (3) Temporal distribution characteristics show that almost all aerosol types vary with months and seasons. In spring, the three seas are Dust aerosols accounted for the largest proportion. In summer, Clean Marine aerosols obviously have the greatest impact for the East China Sea. In autumn and winter, the Bohai Sea and the Yellow Sea are mainly composed of Dust aerosol, while the East China Sea is Clean Marine aerosol as main component.