Orange fruit contains a variety of nutrients, such as sugar, citric acid, vitamin C, protein, carotene, vitamin P and other vitamins. The content of vitamin C is 6 and 20 times that of apple. Qin Cheng orange is not only nutritious, but also bright hue, strong aroma, sweet and sour moderate, smell is a yearning, hope is coveted, food is sweet. Orange, orange, orange and other food preparation can be burned into different flavor of food. As a result, citrus has become one of the most favorite fruits of human beings. In 1990, the total output of Citrus in the world was nearly 69 million tons, ranking first in all kinds of fruits, with a per capita consumption of more than 13.3 kilograms.