Penetrating frame groups in the Yangtze River renovation work is characterized by deceleration, erosion protection and deposit-promoting. Under the limited depositing-promoting condition with the clean water in the operation of water conservancy in the Three Gorges Project, the protective effect of frame groups in beach protection edge is significant. But people are still lack of the knowledge in the mechanism of action of the penetrating frame groups, especially in the hydraulic characteristics of penetrating frame groups in the renovation project. This paper studies the relationship between the deceleration rate of the penetrating frame groups and display height, porosity and other factors via flume experiments, and analyzes the decelerating effects of the inside and tail parts of the penetrating frame groups. The results can provide technical support to the structural design of beach protection edge.