This article starting from the performance characteristics of Sercel's 428 series seismic instruments used for land and offshore exploration,summarized the design concept and data acquisition principle of the marine SEAL428 system through comparative analysis.Begin with the layout and connection methods of field acquisition equipment between the two systems,the article compares the similarities and differences in equipment architec-ture,data transmission,flexibility of equipment layout,channel capability,types of acquisition equipment,and troubleshooting of acquisition equipment between the two systems.The data acquisition principle of SEAL428 seismic acquisition instrument was analyzed,and the"ghost pair"transmission technology and digital filter prin-ciple of SEAL428 were deeply discussed,hopeitcan provide reference for the improvement of domestic marine geophysical equipment technology.