ＳＺＧＣ－９３型数字工程地震仪是专为工程地震勘探而研制的。经过两年多的实际生产使用表明：该仪器精度高、性能稳定、操作方便，是一种实用性较好的野外专用设备。本文介绍了它的组成；论述了其各个单元电路的工作原理及主要技术指标；最后说明了该设备两年多来的实际应用成果。 SZGC-93 digital engineering seismograph is designed for engineering seismic exploration and development. After more than two years of actual use of the production shows that: the high precision of the instrument, stable performance, easy operation, is a practical field special equipment. This paper describes its composition; discusses the working principle of each unit circuit and the main technical indicators; Finally, the device shows the practical application of more than two years.