Abstract: Based on the data of 90 typhoons affecting East China from 2001 to 2020,annual and monthly distribution and landing characteristics of typhoons were analyzed by using statistical method,and occurrence probability of two main disaster-causing factors（wind and rain） were calculated by information diffusion. Then risk assessment of typhoon disaster-causing factors was carried out. The results showed that :the typhoon types were mainly strong typhoon and typhoon,annual average number affecting East China was 4. 5,mainly concentrated in July-September,especially in August,landing Taiwan was the most frequent,followed by Fujian and Zhejiang provinces;The probability of the maximum wind speed in 30-40 m/s was high,and probability of maximum rainfall in 200-400 mm was high.Fujian,Zhejiang and Jiangxi provinces had highest risk levels of typhoon disaster-causing factors,serious typhoon impacting areas. Shandong and Anhui provinces had medium risk levels of typhoon disaster-causing factors,moderate typhoon impacting areas. Jiangsu and Shanghai had the lowest risk levels of typhoons disaster-causing factors,light typhoon impacting areas.