In 2000, Tan sheep was listed as a national second-level protected species by the Ministry of Agriculture. In June 2003, it was recognized as the "Hometown of China's Tan Sheep" by the China International Brand Association. In June 2005, the "Yanchi Tan Sheep" certificate of origin trademark was successfully registered. In 2006, Yanchi County built the China Tan Sheep Pavilion and held its first grand event. China's Ningxia (Yanchi) Tan Sheep Festival was awarded the famous trademark of the Ningxia Hui Autonomous Region in September 2008, and was recognized as a Chinese well-known trademark by the Trademark Office of the State Administration for Industry and Commerce in January 2010, giving Tan Sheep products a "gold medal business card" to adapt to market economy competition. ". On August 31, 2008, "Yanchitan Mutton" was applied by the Yanchi County Tan Mutton Product Quality Supervision and Inspection Station, and reviewed by the State Agricultural Bureau, and registered as a "geographical indication of agricultural products". The scope of protection is: Yanchi County, located in Ningxia Hui Autonomous Region The eastern part is the transition zone from the Ordos Platform to the Loess Plateau, located between 106°33′-107°47′ east longitude and 37°04′-38°10′ north latitude. The quality control technical specification number is: AGI2008-07-00061.