Gui Zhi Powder is usually a powder made from the processing of cinnamon sticks, there is no definite conclusion on when to drink Gui Zhi Powder, you can usually drink Gui Zhi Powder in the evening, and it is recommended to consult your doctor before taking it. Gui Zhi is pungent, sweet and warm in nature. It has the effects of sweating and relieving muscles (relieving the evil qi on the surface of the skin), warming the meridians, assisting yang in transforming qi, and leveling the flushing and descending rebelliousness (resolving upward reversal of qi with drugs that descend qi), and it is useful in the treatment of wind-cold colds and flu, blood-cold and menstrual closure, paralysis of the joints, phlegm (the pathological product of the disordered metabolism of water and liquid), edema, and pennisolvae. Gui Zhi is pungent and warm, easy to injure the yin and move the blood, all external heat disease, yin deficiency and fire (deficiency of yin and essence in the body, the emergence of deficiency and fire), blood heat and paranoia (heat caused by the blood abnormalities out) and other certificates should be contraindicated. In addition, pregnant women and people with excessive menstruation should be cautious in using this drug. If you need to use this drug, it is recommended to consult a professional physician and not to use the drug blindly on your own.