This paper presents the on-site investigation and analysis of a new kind of flexible mattress with concrete blocks ballast which is widely used in the Yangtze River.Yanglinyan waterway is a straight braided stream，which needs to be regulated after running of the Three Gorges.The structural improvement measures of beach protection belts used on the Nanyangzhou are studied.The problem of different requirements for different impact areas are solved by a combination of X type belts，unit belts，and steel gabion pad.The engineering practice shows that the new structure adapts to water erosion features.Combining with the use of permeable framework，the stability of the regulation building has a substantial increase.