Radix Panax Ginseng has the effect of tonifying qi and generating fluid, clearing heat and nourishing yin; it is contraindicated for those who are obstructed by cold and dampness, weak in the middle yang and those who suffer from dampness-heat depression and fire. Radix Panax Ginseng is clinically used in treating qi and yin deficiency, lung qi deficiency and lung yin deficiency, thirst and thirst in heat diseases. 1. Qi and yin deficiency: American ginseng has the effect of replenishing qi, which is weaker than ginseng, but its medicinal properties are cooler, so it can also have the effect of clearing fire, nourishing yin and generating body fluid. 2. Lung qi deficiency and lung yin deficiency: because of its effect of tonifying lung qi, nourishing lung yin and clearing lung fire, American ginseng can be used to treat shortness of breath and shortness of breath, cough with little sputum or sputum with blood, etc., which are caused by fire and heat injury to lung qi and yin. 3. Thirst and thirst due to deficiency of qi and fluid in heat illness: American ginseng can be used to treat symptoms such as heat and sweat due to heat injury to qi and fluid. It should be noted that the use of traditional Chinese medicine, should be in the Chinese medicine doctor to identify the evidence, to achieve the rational use, do not take on their own, so as not to delay the condition.