As the key section of dredging in the second phase of the 12.5 m deepwater channel of the Yangtze River below Nanjing city,North Fujiangsha waterway is easy to be affected by the erosion of the sand and the sand in the upper reaches of the Jingjiang shoal,and the changes of river regime are complex.Aiming at the difficulties in the turning area layout,mud line layout and bow blowing,we carry out a research on the construction condition,navigation regulations,construction efficiency,construction safety,as well as the economic rationality,etc.Combining theoretical calculation and practical construction experience,we put forward countermeasures,so as to optimize the north Fujiangsha waterway 12.5 m dredging scheme and meanwhile provide reference for the inland river dredging construction of the Yangtze River in the future.