The differences between cinnamon sticks and cinnamon bark are source and efficacy and treatment. 1. Different sources: Cinnamon sticks are the dried shoots of the camphor plant Cinnamomum cassia, while cinnamon bark, i.e. cinnamon, is mainly the dried bark of this plant. 2. Different efficacy: (1) Gui Zhi is a wind-cold dispersing medicine in the list of antidepressants. It can disperse wind-cold, warm the meridians, help Yang to transform qi, and pacify and lower the rebellious qi (use qi lowering medicine to solve the upward rebellious qi), etc. It can be used to cure the deficiency of wind-cold. It can be used to treat deficiency of the surface of wind-cold, which manifests as fever and sweating, bad wind, and clear nasal discharge. It can also be used to treat deficiency and coldness in the middle jiao, chest paralysis (stuffy pain in the chest) and heart pain; dizziness, palpitation and coughing caused by spleen yang’s lack of transportation and water-dampness internal storage (water-dampness staying in the body). This product is pungent and warm to help heat, easy to injure the yin and blood, where the external heat disease, yin deficiency fire, blood heat paranoia (heat caused by blood abnormalities out) and other evidence, should be contraindicated. Pregnant women and menstruation should be used with caution. (2) Cinnamon is a warming herb, its effect is to tonify fire and help yang (meaning supplementing the fire of the life gate through pungent and warming medicines, warming and tonifying yang qi of the whole body), inhibiting the rise of fire in the kidneys, dispersing coldness and relieving pain, and warming and clearing the meridians. It can be used to treat impotence, abdominal pain, cold hernia and dysmenorrhea. This product is pungent and hot to deplete yin and move blood, so it is contraindicated for people with yin deficiency and fire, and should be used with caution for people with bleeding tendency and pregnant women, and should not be used with red stone resin. The above drugs need to be used under the guidance of a doctor, do not take medication without authorization, so as not to delay the condition.