Abstract:A convolution model of seismic data in South China sea is putforward,The convolution of seismic data with the overall inverse filtering operator designed from the model can eliminate outside effects from seismic data to get source wavelets, The key to the success of this processing method is that we in the light of real hydrology and geology conditions,develop a newwsweep method for correct extracting source wavelets,thus changing a indefinite coriventional deconvolution into a scientific definite wavelet processing method, To prove this method effective,we design different inverse filtering operators for the seismic data in different waters, and also get good processing results.