Astragalus is the root of Astragalus membranaceus or Astragalus membranaceus, family Leguminosae. It is sweet in taste, slightly warm in nature, and belongs to the spleen and lung meridians. It has the effects of tonifying qi and elevating yang (tonifying qi so that yang qi rises and develops), fixing the surface and stopping sweating (stopping sweating by consolidating the surface of the muscle), inducing diuresis and eliminating swelling (relieving urination and eliminating oedema), generating fluids and nourishing blood (replenishing the body’s water and blood), promoting stagnation and paralysis, supporting toxins and discharging pus (discharging the body’s pus and toxins), and converting sores. Astragalus is used in treating Qi deficiency, loose stools, prolonged diarrhea and prolapse of the anus, hemorrhagic leakage (excessive menstrual flow or dribbling), Qi deficiency and edema, internal heat and thirst (fever accompanied by excessive eating, drinking, and urination), blood deficiency and yellowish color, hemiplegia (inability to move one side of the limb at will), paralysis and numbness, and ulcers that do not astringent, etc. The adverse effects of this drug are not clear. The adverse effects of the drug are not clear. It should not be used in cases where there is an abundance of evil on the surface, internal stagnation, yin deficiency and hyperactivity of yang (deficiency of yin fluid and hyperactivity of yang qi), and heat and toxicity at the beginning of sores or after ulceration. Astragalus is an important medicine to replenish the qi of the spleen and lungs, and is especially suitable for patients with spleen and lung qi deficiency, and will not make them more and more weak. If you need to use this medicine, it is recommended that you use it under the guidance of a professional physician, rather than blindly using it on your own.