The data from 2008 to 2013 of typhoon and siltation of Yangtae estuary is collected.Because there is no data of measured sudden siltation and there is no scientific and effective statistical method in Yangtze estuary deepwater channel,we propose a statistical method of typhoon-induced sudden siltation based on the currently measured data of siltation for Yangtze estuary deepwater channel.By this method,we carry out a statistic analysis on the typhoon-induced siltation of Yangtze estuary deepwater channel from 2008 to 2013.