Purple sweet potato health wine (physiological alkaline wine) is selected from virus-free purple sweet potato planted in selenium-rich sandy loam at Qiaotou, Chengmai County, Hainan Province. Using 278m pollution-free mineral water from Jinjiling, Hainan, purple sweet potato is fermented in a clay pot patented by ZL 200410044217.9+07.9. Purple sweet potato is rich in selenium and anthocyanins. Selenium is an anticancer substance, and anthocyanins bring many benefits to human body. Fundamentally speaking, anthocyanin is a powerful antioxidant, which can protect the human body from a harmful substance called free radicals. Anthocyanins can also enhance vascular elasticity, improve circulatory system and skin smoothness, inhibit inflammation and allergies, and improve joint flexibility. No artificial pigment is added, showing natural physiological alkalinity (exclusive). The pure brewing stock solution is 28% vol, which is purple when it comes out of the pottery jar and amber after 6 months at room temperature. Drink a small amount before going to bed at night to regulate physiological stability and clean up free radicals. Hainan Jinjiling Zishu Manor