In Chinese medicine, chronic obstructive pulmonary disease corresponds to lung distension. When the disease is characterized by qi deficiency, astragalus in water can be taken, but the efficacy is limited because the active ingredients of astragalus in water may not be completely precipitated. Astragalus has the effects of tonifying qi and elevating yang (tonifying qi so that yang qi rises), consolidating the surface and stopping sweating (stopping sweating by consolidating the surface of the muscle), and generating fluids and nourishing blood (replenishing the body’s fluids and blood). It is used in treating qi deficiency and weakness, loose stools (thin and unformed feces), sinking of the middle qi (deficiency of the spleen and stomach qi, which results in the lowering of the internal organs), prolonged diarrhea and prolapse of the anus, sweating from the surface of the body (frequent and natural sweating due to the weakness of the surface of the body), qi deficiency, edema, and blood deficiency, such as atrophy. If the patient’s evidence belongs to the lung and kidney qi deficiency, lung and spleen deficiency, you can follow the doctor’s instructions to take astragalus. Consult your doctor for specific medication and do not use medication on your own to avoid delaying your condition.