Honey can relieve cough, but it is mainly used for dry cough caused by lung dryness. Honey has a moisturizing effect on the lungs, qi, cough, for the dry evil injury to the lungs or lung qi and yin deficiency caused by dry cough, or even hemoptysis better, can play a moisturizing lung yin, help lung qi so as to stop coughing purpose. This is related to the sweet taste of honey, can enter the lung meridian, moisturizing dryness and nourishing Yin. But other causes of cough, such as wind-cold, wind-heat, phlegm-dampness lungs caused by cough, cough, phlegm, phlegm, white or yellow, thin or thick, the application of honey cough effect is not good, mainly because the honey does not have the effect of phlegm, can not be from the root to stop coughing. Therefore, the first thing to do is to distinguish the cause of the cough, before deciding whether or not to apply honey to relieve cough.