Abstract: Based on the NCEP/NCAR reanalyzed wind data,TOMS ozone data and ECMWF ozone mass mixing ratio;the MMC climatic state during 1996-2006 is investigated by using a superposition method.At the same time,the intensity index of Hadley circulation ascending branch (HAI) is defined and the relationships between Hadley circulation ascending branch and ozone in East Asia is discussed.It is indicated that,the joint ascending branch of the Northern and Southern Hadley circulation has a marked seasonal variability.HAI in winter and in summer (WHAI/SHAI) both shows obvious annual change.WHAI is the largest in Febrary and SHAI is the largest in August.There exist some negative correlation between the WHAI/SHAI and their altitude,and the WHAI-altitude correlation is better.The results also show that:Accompanying the strengthened Hadley circulation ascendance,the troposphere ozone mass mixing ratio of the corresponding center of Hadley ascending branch in East Asia will reduce.