Abstract: The nutrition composition of sweet potatoes with different colors was analyzed.The results showed significant differences among three types of sweet potatoes in the contents of vitamin C,β-carotene,protein,carbohydrate,Cu,Fe,Mn,Mg,Zn and Ca.The orange-colored sweet potatoes had the highest level of β-carotene,and the lowest carbohydrate and Zn contents.The purple sweet potatoes were rich in protein,Zn,Fe,Mn,Mg and Ca,but poor in vitamin C.The sweet potatoes with yellow flesh had a Zn content between those with orange-and purple-colored flesh.