UWSNs are based on acoustic wave wireless communication technology because of the complex underwater environment.Compared with terrestrial wireless communication channels
the UWSNs channels have unique characteristics
such as long propagation delay
limited communication bandwidth and high error bit rates. Three important factors which affect the characteristics of the channel are analyzed and simulated by Matlab in order to realize better design and application of UWSNs.By analysis and simulation
relationship between error bit rate and transmitting range is derived.