As a new type of energy dissipation and protection structure,the active hook is used for the first time in the first phase of the Yangtze River deepwater channel project.This paper studies the characteristics of deceleration and accretion promotion by the movable bed and erosion experiment and analyzes the observation data before and after the project implementation.Experimental and observational results show that sediment deposition is obvious within the scope of protection and the structure is able to cover a certain range of its surroundings.