The Yangtze estuary regime changes frequently and it’s easily influenced by natural and human factors. Illegal dumping causes not only local variation of channel topography, but also local siltation of the channel. This will affect seriously the navigation safety and increase the channel maintenance cost and destroy the channel resources. From the view of channel development and channel resources protection, it is necessary to strengthen the supervision and reduce human influence on the channel of the Yangtze estuary as possible as we can.