本文介绍用我国自行研制的763型长周期地震仪建成的全国长周期地震观测台网及各台基本数据,该台网与我国已有的短周期地震台网配合起来已达到世界标准地震台网(WWSSN)的观测水平。使用本台网的观测资料做出的初步结果证明763长周期台网显著提高了我国测震能力,并在某些观测领域已突破国外文献报道的范围。 This paper introduces the national long-period seismic observatory network and each basic datum built by China’s self-developed 763 long-period seismograph, which, combined with the existing short-period seismic network in China, has reached the world standard seismic network (WWSSN) observation level. The preliminary results using the observational data of this network prove that the 763 long-period network has significantly improved the seismometric capability of our country and has exceeded the scope of the foreign literature in some fields of observation.