The increase in ship tonnage and the development of large-scale port operation areas need to upgrade the level of the waterway from Jiulongpo to Chaotianmen in the upper reaches of the Yangtze River. In order to meet this demand，the Jiulongtan waterway regulation plan is studied through physical model tests，so that the waterway size of this section is upgraded from level III（2.7 m×50 m×560 m，water depth×navigation width×bending radius）to level I（3.5 m× 150 m×1 000 m）.Through analyzing the effects of the project implementation，it is concluded that：1）After the regulation of the Jiulongtan beach section，the scale of the channel meets the design requirements，the channel conditions are close to the general channel，and the navigation width is sufficient to allow the ship to operate normally. 2）The situation of bending，narrowness and rapid water flow in the beach section of Jiulongtan is completely solved，and the water flow is improved from the previous swirling water to the current steady flow state. 3）The ship is significantly easier to control，and it is safer to go through bends.