Gui Zhi has the efficacy of sweating and relieving the muscles (relieving evil qi from the surface of the skin), warming the meridians, assisting yang in transforming qi, and calming Chong and descending qi. It is clinically useful in treating diseases such as wind-cold flu, epigastric cold pain (cold pain in the stomach and abdomen), blood-cold menstrual occlusion, joint paralysis, phlegm-drinking (a pathological product of impaired metabolism of water and fluid) oedema, palpitation and running dolphin. Commonly used formulas include Gui Zhi Tang, Gui Zhi and Zi Zi Tang and Xiao Jian Zhong Tang. Gui Zhi is pungent, sweet and warm in nature. It belongs to the heart, lung and bladder meridians. Gui Zhi with licorice, jujube, peony and other traditional Chinese medicines to form a small Jianzhong Tang can be used to treat deficiency and labor urgency; Gui Zhi with accompanying seeds and ginger to form a Gui Zhi and Zi Zi Tang can be used to treat the symptoms of excessive sweating that causes yin and yang injuries to the surface of the symptoms of the unresolved; Gui Zhi with accompanying peony, licorice and ginger to form a Gui Zhi Tang can be used to treat the symptoms of the sun stroke. Clinical application, because gui zhi pungent and warm can help heat, easy to hurt the yin and blood, so all the warm and hot disease and yin deficiency and yang, blood (non-physiological hemorrhagic disease) and pregnant women should not be taken. The specific dosage of Gui Zhi, need to follow the doctor’s instructions to take medication, do not use on their own.