Because the rockface foundation of open type breakwater in Bohe center fishing port is very shallow,the open piled quay is inapplicable.Based on the typical gravity breakwater,we combine the through flow characteristic of the box culvert and the prevention of wave of chamfered vertical breakwater,propose a new structure which is called “box-culvert chamfered vertical breakwater”.Through the theoretical analysis and the demonstration of physical model,the results show that the structure is safe and reliable,and is capable to prevent wave,pass flow,reduce the back silting and achieve other functions.Through the preli-minary analysis of economic benefit,the structure which can be used as environmental protectionmeasure,is considered to be helpful to water renewal.It also can reduce the back siltation intensity and the cost of maintenance dredging.