本文介绍了一种ＨＰＧｅγ谱仪点源到体源效率的相对比较传递方法。采用一种简单参数的蒙特卡罗方法计算峰效率，实验测量点源的效率曲线，并与一个“标准”测量系统或一系列测量系统的计算和实验结果相对比较，可以获得体源的效率刻度。在探测效率分别为２０％、３０％、５０％的ＨＰＧｅ谱仪系统上，用这种方法获得的体源效率与实验测量结果的偏差在±４％以内。 This article describes a relative transmission of HPGe gamma spectrometer from point source to source efficiency. The Monte Carlo method with a simple parameter calculates the peak efficiency, experimentally measures the point source efficiency curve, and compares the calculated and experimental results with a “standard” measurement system or a series of measurement systems to obtain the efficiency scale of the body source . In the HPGe spectrometer system with detection efficiencies of 20%, 30% and 50% respectively, the difference between the body source efficiency and the experimental measurement obtained by this method is within ± 4%.