Grapes (pú tao), a kind of berry, one of the oldest and most widely distributed fruits in the world, mankind began to cultivate this kind of fruit tree a long time ago, and its berries are mostly round or oval, and the color varies with varieties. It accounts for almost a quarter of the world's fruit production; it has high nutritional value and can be made into grape juice, raisins and wine. Large grains, thick skin, less juice, more water, easy to separate the skin and flesh, sweet and sour flavor, resistance to storage and transportation of the Eurasian species of grapes, also known as raisins, generally grow in clusters, yellowish-green, red, black-blue or purple. Flesh outside a layer of thin skin, skin outside a thin frost, some varieties of seedless. Grapes can be eaten raw as a fruit, as well as made into wine or raisins. In addition, they can be used for decoration. Grapes because of the bright colors, delicious taste, and has a high nutritional value, is known as the "crystal pearl".