Under the background of global climate change,it often appears the destruction of coastal structures caused by extreme waves.It is necessary to use the large-scale wave flume to reappear the destruction process,research the breaking mechanism,explain the sediment starting and movement under wind waves and analyze the coupling effect of the structure and foundation under big wave actions.The large-scale wave flume could break through the limitation of the scale effect.The wave generator of new wave flume is the most important equipment.According to the analysis of wave characteristics and requirement of the application,we obtain the design parameters for the wave generator.The wave flume designed and being under construction is 450 m long,5 m wide,and 8 to 12 m deep.It will be the largest-scale wave flume with the strongest wave power in the world,and the design wave height would be 3.5 m.