This paper aims to discuss the relationship among the wave height, wind speed and water depth on muddy coast, to establish the temporal relationship between the on-way loss of the wave power and the vertical power of the suspension sediment on the muddy coast, and to try to prove the significance of wave-induced current on muddy coast and its remarkable influence on local fluid state. Taking Lianyungang(China)as example, the works have been done as follows: First, the notable relationship between two dimensionless quantities, relative wave height and relative wind speed, is studied through theoretical analysis and verifying base on observation data. And then, the process of the wave power on-way loss was calculated trough the mathematical wave model at Lianyungang in Typhoon Wipha(2007). Both the observation data and the model result show that the process of wave power on-way loss lags behind that of wave height and is in good agreement with the process of suspension sediment concentration.
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