Oranges are sweet and sour in flavor, cool in nature, belonging to the lung and stomach meridians, and have the effect of regulating qi and broadening the chest, clearing the lungs and resolving phlegm. Orange peel contains a variety of volatile oils, such as Narcotine, orange peel oil, etc., also has a moisturizing cough, spleen, phlegm, qi cough effect. Wind-heat cough can be treated with steamed oranges, wind-cold cough can not eat steamed oranges.