Ziyang selenium-rich tea, a specialty of Ziyang County in southern Shaanxi Province, China, is a geographical indication product of China. The production area is located in the upper reaches of the Han River, the northern foothills of the Daba Mountains, no summer heat, no winter cold, moderate rainfall, the climate is suitable for tea. The territory has a long history of tea production and marketing, and natural selenium-rich areas, the production of tea with high selenium content, with special health effects.