In Chinese medicine, heat therapy is mainly used to dispel wind and cold, relieve pain, dispel wind and dampness, and warm Yang and help Qi. In Western medicine, heat therapy can promote the dissipation and absorption of local inflammation, increase the expansion of local microvasculature, make the blood flow faster, and gradually discharge the toxins from the tissues, and increase the blood flow on the body surface, which will reduce the chronic inflammatory state of the tissues, thus achieving the effect of pain relief. However, heat therapy is not suitable for all pain symptoms, so treatment must be carried out under the guidance of a physician, otherwise it may not be conducive to the relief of the condition, and may also aggravate the condition.