The most unique thing about purple sweet potato is that it is rich in anthocyanins. Anthocyanins have a strong anti-oxidant effect, help resist free radical damage to cells, can help anti-aging, and also help maintain vision and cardiovascular health. Sweet potatoes have the advantages of purple potatoes. They are rich in vitamins and minerals, including carotene, vitamin B complex and potassium. They are also high-fiber foods with high nutritional value. Studies have found that purple sweet potato anthocyanins can change the microbial composition in the large intestine and significantly increase the "good bacteria" such as bifidobacteria, lactobacilli and enterococci in the intestine. Researchers believe that eating purple sweet potato rich in anthocyanins may be beneficial to the intestinal microbial environment and human health.