There are three main meridians on the outside of the arm, namely the large intestine meridian, the Sanjiao meridian and the small intestine meridian, which run through the outside of the arm. Meridians are a unique theoretical system in Chinese medicine, meridians do not exist in Western medicine, and there is no corresponding theoretical system to support, meridians on the points have different effects, some points can treat internal diseases, such as the Hegu point has sedative pain and activate the channels, clearing heat and relieving the role of the surface. If you want to stimulate the acupoints to achieve the purpose of treating a certain disease, you can achieve treatment and relief by rubbing the acupoints on the meridian, acupoints can be used to treat the disease through moxibustion, for example, arm pain, which is caused by the meridian is not blocked, through the moxibustion of the arm of the acupoints to alleviate the symptoms.