The permeable breakwater has a broad application prospect for its better water permeability,geological adaptability, low cost, relatively easy construction, less environmental impacts, etc. But because it is a new type structure and there is only a few stipulations for it in the current codes, it can’t be a good guide for the permeable breakwater design. Referring to research results both at home and abroad, present codes and engineering experience of similar projects, we present the systematic design of the permeable breakwater. The breakwater of Zhujiajian Yue’ao fishery harbor was designed according to detailed data and function. The designing technique of “ deciding by calculation firstly, selecting by experiment later” was used in the structure design. The experimental result shows that the method for calculating structure’s horizontal force is reasonable.