To solve the channel stability problems of goose-head shaped branch channel in Taizi waterway，this paper analyzes the recent evolution and channel conditions of Taiziji channel in the lower reaches of the Yangtze River based on the river topographic and hydrological data.The result shows that Taiziji channel keeps the pattern of two branches,with the right branch as the main and the lest as the branch.The east port in the right branch occupies the main position during the dry season，and the west port gets somewhat development.The reef blasting project only increases the diversion of the east port during the dry season.During the middle flood period the mainstream goes straight.Erosion is possible to occur at the convex low beach,and there is still room for slow erosion in the west port.In the water diversion area,the central bar changes frequently which affects the channel condition of the east port.Attentions shall be paid to the influence of the west port and scouring & silting in river beach development on the import and middle channel condition of the east port.