There is no effect on phlegm discharge when taking American ginseng for chronic obstructive pulmonary disease, and it is recommended that patients should consult their physicians before taking American ginseng. Radix Panax Ginseng is a traditional Chinese medicine that can replenish qi and nourish yin, as well as clearing heat and generating fluids. It is suitable for symptoms such as dry mouth and throat, weak qi, coughing, phlegm and blood, heat and irritability, etc., which are caused by qi and yin deficiency. Patients with chronic obstructive pulmonary disease (COPD) can take American ginseng if they suffer from deficiency of qi and yin, which generally has no effect on phlegm expulsion, and there is no research showing that taking American ginseng has an effect on phlegm expulsion. Note that American ginseng should be used with caution in patients with dampness-heat and cold-dampness obstruction. Patients should standardize the use of medication under the guidance of traditional Chinese medicine practitioners, and should not blindly use medication on their own, so as not to cause delay in their condition.