Cinnamon is pungent, sweet and hot, and has the function of tonifying fire and strengthening yang, inducing fire to return to the yuan, dispersing cold and relieving pain, and activating blood circulation to promote menstruation. It can be used to treat patients with spleen and kidney yang deficiency, such patients manifest as fatigue, cold fear and cold limbs; some patients may also manifest as edema of both lower limbs, and manifest as loose stools, even several times a day; such patients have a pale tongue, white tongue coating and sunken pulse; men may manifest as impotence, while women manifest as uterine cold. In addition, it can treat pain caused by cold, which is often more intense and occurs when cold is encountered. For women, it can also treat menstrual disorders and dysmenorrhea caused by cold in the uterus, which often leads to menstrual cramps and pains. At the same time, modern medicine has confirmed that cinnamon oil contained in cinnamon itself also has a certain effect of improving microcirculation, can treat coronary heart disease, cerebrovascular disease and hypertension, etc.. It is beneficial to many chronic diseases, and these are some of the effects and functions of cinnamon.