Moxibustion originates from traditional Chinese medicine and has a history of over 3000 years. The fundamental reason moxibustion continues to develop and be passed down is that it is effective. Modern medical technology has found that two factors play a role in therapeutic effects, one is infrared radiation, the heat produced when moxa burns, which is very effective and adaptable for treating the body. The other one is the essential oil it produces. According to the principles of physics, any object can absorb and emit infrared radiation, including the human body. The heat radiation produced by burning moxa is recognized as infrared radiation, mainly near-infrared radiation, which can stimulate the biological molecules hydrogen bonds in the human body’s acupoints. Through the nervous and body fluid systems, energy is supplied to the whole body, activating the body’s immunity and ultimately acting on the affected area. In other words, the infrared radiation during moxibustion can provide the necessary energy for the metabolism and immune function of the body’s cells and provide activation energy for pathologic cells lacking energy.