Pseudostellaria heterophylla, a perennial herb of Caryophyllaceae, is the root block. Pseudostellaria heterophylla is a traditional famous product in Zherong County, which is also called Tongshen and Haiershen. According to legend, Pseudostellaria heterophylla was first discovered in the tomb of Zhu Wen, the ancestor of Jinling. When Zhu Wen's descendants offered sacrifices to the tomb during Qingming Festival, they found the rare grass on the tomb, so they tried to take it. As a result, they felt energetic and full of energy. After being identified by the doctor too much, its sexual and taste effects were similar to those of ginseng, which was used by the prince one by one, hence the name Pseudostellaria heterophylla. According to the Dictionary of Traditional Chinese Medicine, the Chinese herbs are introduced in volumes: Radix Pseudostellariae is sweet, enters the lung and strengthens the spleen, nourishes the stomach and produces fluid, and treats asthenia, anorexia, diarrhea due to spleen deficiency, cough and spontaneous sweating due to lung deficiency, shortness of breath, palpitation, body fluid injury and thirst, and acute and chronic hepatitis. Because of its unique geographical location and natural climate, Pseudostellaria heterophylla is yellow in color, fleshy and high in effective components. It contains 16 kinds of amino acids, of which 8 kinds are necessary for human body, accounting for 4% of the total amino acids, and 7 kinds of trace elements such as iron, copper, manganese, zinc, selenium, cobalt, selenium and molybdenum. In addition, Pseudostellaria heterophylla contains a small amount of ginsenoside, which has the effect of benefiting qi and promoting fluid production, but it does not increase or help dampness. Especially for children's night sweats, loss of appetite, improving anemia and insomnia of the elderly, it is a tonic treasure suitable for men, women and children in all seasons. Zherong Pseudostellaria heterophylla has always been regarded as a quality reference standard in the medicinal material market and enjoys a high reputation. At present, the certification trademark of "Zherong Pseudostellaria heterophylla" has been registered, becoming one of the only two certification trademarks of medicinal materials named by place names in China, and also one of the seven certification trademarks of agricultural and sideline products named by place names in the province. The annual output of Pseudostellaria heterophylla in Zherong accounts for 6% of the national output. In recent years, the unique pharmacological and health-care effects of Pseudostellaria heterophylla have been recognized by consumers at home and abroad, and have attracted much attention from the medical community. For example, Beijing Tongrentang, Jiangzhong Pharmaceutical, Wahaha Group and Mindong Pharmaceutical Factory have developed more than ten kinds of health care products such as Shengmai Drink, Jianwei Xiaoshi Tablet, Taizile and Taizibao.