Derong County is located in the southern part of Ganzi Tibetan Autonomous Prefecture in Sichuan Province. It is located in the junction of Sichuan, Yunnan and Tibet provinces. It is connected to Batang and Xiangcheng counties in the north, adjacent to the middle county in Yunnan Province in the southeast, and Deqin in Yunnan Province in the southwest. The county is adjacent. Derong Tree Pepper is commonly known as “Tree Chili” and is a unique variety of peppers. The pepper is spicy and strong, the color is golden, and the spicy taste is pure and tastes good. Compared with other pepper varieties, it has the effect of not appetizing the stomach after eating, and has the effect of appetizing spleen, dispelling cold and increasing appetite.