At present，the engineering application of concrete floating breakwaters is rare in China. Thus，we introduce the application of a pile guided concrete floating breakwater to a port project in Africa，including scheme selection and the settings of key parameters. We compare the pile guided concrete floating breakwater，conventional mound breakwater，and chain anchored concrete floating breakwater. In addition，we calculate the wave transmission coefficient of the pile guided concrete floating breakwater with an empirical formula and then compare it with the results from physical model tests conducted by others and the performance index of wave attenuation provided by the manufacturer. The results show that under the condition of a small wind wave height and a short period，the pile guided concrete floating breakwater performs well in wave attenuation，can function for boat berthing，and has the characteristic of easy demolition and position changing. The wave transmission coefficient calculated by the Macagno formula is relatively accurate，which can be used in the preliminary design phase.