Compressive sensing (CS) technique can play important roles in improving the efficiency,cutting the cost of seismic acquisition and improving seismic processing results.First,the basic principles of CS are briefly introduced.Then,the significance of CS in reducing costs and increasing benefits for offshore seismic exploration is discussed. Next,a strategy for offshore seismic acquisition based on CS is proposed. Testing on synthetic data showed the effect of seismic acquisition based on CS. Moreover,the theories and applications of some CS-based seismic processing methods are introduced.In this study,the conventional CS-based regularization method is improved by weighting in the transformed domain,to regularize the data with regular missing traces.The applications on both model data and field data have proved its effectiveness. In addition,the applications of CS in deblending of simultaneous sources and noise attenuation are summarized.At last,the prospect for future development of CS in offshore seismic acquisition,processing,and 4D seismic monitoring of reservoir is given.