Astragalus membranaceus, also known as Wang Sun, Bai Yao Mian and Jian Qi, is the dry root of Astragalus membranaceus in Leguminosae or Inner Mongolia, mainly produced in Shaanxi, Gansu, Heilongjiang and Inner Mongolia. It is best to be thick and long, with few wrinkles on the epidermis, firm and soft, full of pink feeling and sweet taste. Traditional Chinese medicine believes that Astragalus membranaceus is sweet and warm in nature, and has the functions of invigorating middle warmer, benefiting qi, stopping sweating, promoting diuresis, reducing swelling, detoxicating and promoting granulation.

Mr. Hu Shi once expected to explore the mysteries of traditional Chinese medicine such as astragalus through scientific experiments, but today it has become a living reality. More and more pharmacological studies have confirmed that Chinese medicine's understanding of the efficacy of Astragalus is very correct. Astragalus does have obvious strengthening effect. Animals fed with Astragalus membranaceus gained weight quickly, serum total protein and albumin increased, swimming time prolonged and urine output increased. Astragalus can also reduce arterial pressure, slow down heart rate, relax coronary artery, enhance myocardial contractility, increase cardiac output, and prevent and treat circulatory failure. It also has a good curative effect on experimental nephritis, which can reduce renal lesions and reduce urinary protein quantitatively.

Astragalus membranaceus is widely used in TCM clinic. Soaking Radix Astragali in water can cure drowsiness, fatigue and shortness of breath. Decocting Radix Astragali with Radix Saposhnikoviae, Atractylodis Rhizoma, Glycyrrhrizae Radix, Rhizoma Zingiberis Recens and Fructus Jujubae for preventing and treating hypoimmunity and recurrent cold. Astragalus membranaceus combined with oysters, floating wheat and ephedra can cure night sweats. Astragalus membranaceus combined with Atractylodis Rhizoma, Radix Stephaniae Tetrandrae, Rhizoma Zingiberis Recens and Fructus Jujubae can treat edema. Radix Astragali can be combined with Radix Codonopsis, Atractylodis Rhizoma, Glycyrrhrizae Radix, Fructus Aurantii, Cimicifugae Rhizoma, and Bupleuri Radix to treat proctoptosis, uterus or visceral prolapse. Astragalus membranaceus with dried tangerine peel, hemp seed and honey can cure constipation in the elderly or postpartum, but it can't be cured if you want to cure it. Astragalus plus cassia twig, peony, licorice, ginger and jujube can not only treat abdominal cold pain, but also treat joint pain and muscle pain. Radix Astragali, Squama Manis, Fructus Gleditsiae Abnormalis, Radix Angelicae Sinensis, Rhizoma Chuanxiong, Flos Lonicerae, and Radix Angelicae Dahuricae can be used to treat abscess without ulceration. Take Radix Astragali, Coicis Semen, Semen Phaseoli, Endothelium Corneum Gigeriae Galli and Pericarpium Citri Tangerinae, and cook with glutinous rice to make porridge, which can treat chronic nephritis and residual edema of pyelonephritis. However, it needs to be clear that rapid pulse and red tongue belong to kidney yin deficiency in traditional Chinese medicine and should not be taken.