为揭示传统中医艾灸的物理特性，本文使用光栅光谱仪直接测量两种自然状态下典型艾条的可见光波段和红外波段的热辐射光谱特性。实验发现，测量的艾条含有少量的可见光光谱，艾灸谱峰出现在大约3．5μm的远红外波段．由此可以确定艾灸的光谱靠近近红外，以远红外为主。

The heat radiation spectrum of two types of moxibustions have been measured by applying grating-spectrometer in order to learn the physical characterstic of moxibustion in traditional Chinese medicine.The measured results show that there is hardly any visible spectrum of moxibustion and the wavelength corresponding to peak value is about 3.5um in the far-infrared band.According to the results we confirmed that the spectrum distribution of the moxibustion is mainly in the far-infrared region very closed to near-infrared.