American ginseng is a traditional Chinese medicine, which can be used for the treatment of deficiency of qi and yin, dry mouth and pharynx, deficiency heat and tiredness, coughing, phlegm and blood. Radix Panax Ginseng is the dried root of Panax Ginseng, which is sweet in taste, slightly bitter in flavor and cool in nature, with the effect of tonifying qi and nourishing yin, clearing heat and promoting the production of fluids, so it can be used for treating qi deficiency and yin deficiency, dryness of the mouth and pharynx, heatiness and tiredness, coughing, phlegm and blood, as well as internal heat and thirst (internal fever accompanied by symptoms such as overeating, excessive drinking, excessive urination, etc.), etc. It should be noted that Radix Panax Ginseng can be used in combination with other herbs. It should be noted that, when Xiyangshen is used with other herbs for internal use in decoction, it should be decocted separately, and Xiyangshen should not be used with quatrefoil. In addition, it is contraindicated to use it for all solid and fire-exposed cases, such as deficiency of yang in the middle, obstruction of cold and dampness, and depression of qi and fire, etc. The specific dosage should also be avoided. Specific dosage should also be under the guidance of physician’s diagnosis.