灵敏度是 NMR 谱仪的主要技术指标之一。随着磁共振应用技术的发展,对仪器灵敏度的要求越来越高,为此人们提出了一系列改善灵敏度的措施.例如:提高仪器的工作频率,应用新的实验方法,采用先进的电子技术和优质的元器件以及制做最佳接收机等等.本文仅从降低接收系统噪声,提高传输效率角度出发,简要介绍有关提高 CH—100型 NMR 谱仪灵敏度的几个问题. Sensitivity is one of the main technical specifications of NMR spectrometer. With the development of magnetic resonance imaging (MRI) technology, the requirements on the sensitivity of the instrument are getting higher and higher, so a series of measures to improve the sensitivity have been put forward, for example, increasing the operating frequency of the instrument, applying new experimental methods and using advanced electronic technology And high-quality components as well as making the best receiver, etc. In this paper, we only briefly introduce some issues about improving the sensitivity of the CH-100 NMR spectrometer, in order to reduce the receiving system noise and improve the transmission efficiency.