Ophiopogon and Astragalus can benefit qi and nourish yin (replenish qi, nourish yin fluid), generate fluid and nourish blood (replenish water and blood in the body), moisten the lungs and stop coughing, alleviate qi and yin deficiency (deficiency of both qi and yin fluid) due to dry mouth and throat, dry cough without phlegm or phlegm with little mucus, heartburn and sleeplessness (disturbing heat in the heart and insomnia symptoms), fatigue (mental exhaustion, physical weakness), and spontaneous sweating. Ophiopogon is a yin tonic with a sweet, slightly bitter flavor, slightly cold nature, and goes to the heart, lung and stomach meridians. Its function is to nourish yin and generate fluid, moisten the lung and clear the heart. It can be used for the deficiency of yin in the lungs and stomach, such as less thirst, dry cough and hemoptysis; it can also be used for the insufficiency of yin in the heart, such as palpitation (rapid heartbeat, often accompanied by panic attacks), and the late stage of fever, such as injury to the body fluids. Astragalus is a qi tonic, sweet in flavor and slightly warm in nature. It belongs to the spleen and lung meridian. Its function is to tonify qi and consolidate the surface (consolidate the surface by tonifying qi), support the toxin and expel pus (expel pus and toxin in the body), regenerate muscle, diuretic, etc. It can be used for the treatment of chronic qi deficiency and subsidence. It can be used for Qi deficiency and subsidence, prolonged diarrhea and prolapse of the anus, spontaneous sweating (involuntary sweating during the day, sweating is aggravated by the slightest movement), sores and ulcers that do not converge for a long time, and oedema and other conditions. Solid evidence and yin and Yang deficiency should not be taken. Although maitake and astragalus have the above effects, but the effective dose of infusion is limited, it is recommended to use the drug under the guidance of a doctor.