Sha Ge is often referred to as sweet potatoes . It is native to tropical America and later introduced to China. At present, there are more cultivated areas in North China, Southwest China, South China and Taiwan. The price is low and the taste is good. It is refreshing and crisp, and it is sweet and delicate when cooked. As a result, it is welcomed by the people and is one of the most common foods in China. And its administration also hangover, lowering blood pressure, thirst-quenching fluid function.