Influenza, that is, influenza, belongs to the category of Chinese medicine “seasonal colds”, seasonal colds are caused by the feeling of epidemics and plagues, belonging to the surface of the solid evil disease. Astragalus is contraindicated in solid cases and those with yin and yang deficiency, so it is forbidden to drink astragalus water during a cold. The effects of astragalus are to consolidate the surface to stop sweating (stop sweating by consolidating the surface of the muscle), replenish qi, reduce swelling and diuresis, nourish the blood and promote the production of fluids, astringent sores and promote the growth of muscle (help sores to heal faster and promote the growth of new flesh), etc. Clinically, astragalus is used in patients who are weak in qi. Clinically, it is mostly used for qi deficiency and weakness, qi deficiency and edema, surface deficiency and spontaneous sweating (due to frequent natural sweating in weak muscle surface), prolonged diarrhea and prolapse of anus, blood deficiency and atrophy, carbuncle and gangrene (a kind of venomous sores, which occur on the surface of the body, limbs, and viscera of the acute suppurative disease) that do not converge after prolonged ulceration and other illnesses. Presence of seasonal colds, should be early consultation, under the guidance of the doctor reasonable treatment, so as not to delay the condition. If you drink astragalus water, it is recommended to follow the doctor’s instructions for medication.