Oranges are mainly divided into sweet orange, navel orange, blood orange, sugar orange and red orange.

In China, young fruits and fallen fruits can be dried and used as medicine. Storage and transportation resistance. The maturity varies greatly, which can prolong the supply period of fresh fruit and processing raw materials. Citrus varieties can be divided into early, middle and late maturity according to fruit maturity.

In view of the high degree of commercialization of citrus, many varieties with their own characteristics have been born under the market demand, such as late-maturing summer oranges (Mi Xia Nai Orange and olinda Orange) to fill the market gap.

Blood oranges include: Tulloch, Rose Blood Orange, Ruby Blood Orange, etc. Both pulp and juice are purple or dark red. The pulp is tender and juicy with unique flavor, and the Mediterranean region is its origin and main producing area.

It is a variety of oranges, but it is generally smaller than oranges, mainly because the pulp and juice are red because of anthocyanins. The skin of blood orange is smooth, smaller than ordinary oranges, generally with small pits and red color.

Because there are anthocyanins in blood orange, the pulp is red. Blood orange originated in Europe and is now cultivated in Spain, North America and Italy. The main planting areas in China are Chongqing, Jiangxi, Hunan and Zhejiang.