Chaihu, also known as Chaihu and Bianhu, is a real estate Chinese herbal medicine in Qixian County. It belongs to Bupleurum and is produced in 16 townships of Jixian County. It is derived from the umbelliferous plant Bupleurum chinense Dc.d. Dry the roots. In the Song Dynasty, Su Shi said in the book "The Scriptures and Herbs": "Chaihu Shenghong's farmland and haiku" mentioned in the article, Hongnong is the Hongnong County, and Jixian County set up Luyi County in the Song Dynasty, belonging to Hongnong County. Because of its thick and fat roots, yellow-brown color, no residual stems, high volatile oil, saponin content, good curative effect, has the reputation of "Bupleurum King" and "嵩胡".

Technical requirements for quality of Chaihu in Jixian County (1) Soil conditions The soil is yellow brown loam or brown loam, pH 6.2 to 7.0, organic matter ≥1.2%, and altitude 260 to 1500 m. (2) Cultivation and management 1. Selection of seeds: The mature seeds of the previous year were selected, and the seeding amount per mu was 2.5 kg to 3.0 kg. 2, harvesting and processing: harvested from September to October of the second year, cut the roots, and other packaging. (2) Quality index 1. Character characteristics The main root is thick and strong, with fewer lateral roots, yellowish brown color and strong aroma. 2. Physical and chemical indicators volatile oil ≥ 1.20%, saikosaponin ≥ 1.0%.

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Producers within the original production area of ​​Chaihu in Jixian County, if using the \"Special Mark for Geographical Indication Products\", must apply to the Chaihu Geographical Indication Product Protection Application Agency of Jixian County Quality and Technical Supervision Bureau. After the approval of the General Administration of Inspection and Quarantine, the \"Special Mark for Geographical Indication Protection Products\" of Chaihu in Pixian County can be used.