One dimensional numerical model from Hejiang Baisha to Jiangkou is built and used to simulate the Hejiang channel and analyze the sectional water depth under different schedulings. The calculation results show that the whole situation of Hejiang channel from Baisha to Jiangkou is favorable. The channel behind Duping ship lock has the region which does not meet the navigation requirements only in the condition of low water and middle water period, the distance is short and it’s easy to control. The channel section intervals and section types which don’t satisfy the demand of channel’s design dimensions are given and the simulation result for whole Hejiang channel is analyzed and opinions on channel’s regulation are put forward.