Oranges are neither hot nor cold fruits, but warm fruits. Orange peel, granular pulp, oblate fruit, 5~7cm in diameter, orange red and orange yellow. Peels and petals are easy to peel off, and the fruit is hollow. The fruit ripens from 10 to 12. Orange peel is thin and fleshy, and the juice is sweet and sour. When purchasing oranges, you should choose varieties with correct fruit shape, no deformity, smooth pulp and fresh fruit stalks.

There are more than 1000 kinds of processed oranges, the most important of which is orange juice, followed by canned oranges in syrup, candied fruit and fruit wine. In addition, citrus can also extract essential oil, pectin, limonin, seed oil and carotenoids, and citrus peel residue can also be made into fermented feed.