Abstract:The data of total atmospheric ozone in East China from Dec. 1993 to Nov. 1994 is analysed and compared with globe average in same latitude. The annual, diurnal and seasonal changes of total atmospheric ozone are discussed. The results show that there is the characteristic of double peak of total ozone in annual change,and the total ozone is higher in the noon and lower in the morning and evening. The amount in spring is higher than in winter. The relationship between the total ozone with atmospheric transparecy is more intimate.