为填补我国海洋地震监测和海洋地震研究的空白,获得对海洋地震多发区域的监测能力,特此进行宽频带海底地震仪的研制.本文详细介绍了宽频带海底地震仪的设计目标、基本工作原理、组成结构及性能技术指标和研制过程.此外,还介绍了宽频带海底地震仪在中国南海东北部海域应用实例的实验结果,展示了宽频带海底地震仪在3000m海底所记录到的数据资料. In order to fill the blank of marine seismic monitoring and marine seismic research in our country and obtain the monitoring ability of marine seismic multi-region, the development of broadband seabed seismic instrument is hereby developed.In this paper, the design objectives, basic working principle, Composition and performance of technical indicators and development process.In addition, the application of broadband seafloor seismograph in the northeastern South China Sea is introduced, and the data recorded on the 3000m seafloor by the broadband seafloor seismometer are presented.