Yaojian reach is a famous navigation blocking reach in the middle Yangtze River.The construction standard by 2020，set by the General Outline of the Yangtze River Main Channel Developing Plan，is 3.5 m×150 m×1 000 m（depth×width×bending radius）and at a navigation assurance rate of 98%.Considering the external factors such as the operation of the TGP and flood prevention，we have implemented Yaojian reach 1st phase construction and Wuguizhou protection construction successively since 2009 on the principles of “combining the future and recent，and implementing by stages”.The navigation channel has been improved obviously and satisfactory effect has been achieved the construction implementation.Based on the existed research achievements and data since the project implementation，we analyze the channel variation and channel condition after the project implementation and summarize the regulation experience for the reach.