It is rich in iron, calcium and vitamin K, and has the functions of promoting blood coagulation, increasing hemoglobin content, improving oxygen carrying capacity, and promoting hematopoiesis. Amaranth is also the leading role on the diet table. Eating it regularly can reduce weight, promote detoxification and prevent constipation. Rice amaranth is the name given to amaranth by Shanghainese and southerners, and it is also a favorite dish of Shanghainese. Its characteristic is that after frying, the soup is purple and red, which is used to mix with rice, making people have a great appetite. The rice mixed with soup is also called "red rice".