In production and management, fruit classification is often based on the structure of deciduous fruit trees and evergreen fruit trees combined with the biological characteristics of fruit trees, that is, fruit cultivation classification, also known as agricultural biology classification. (1) Deciduous Fruit Tree ① Renguo Fruit Tree: According to the botanical concept, the fruit of this kind of fruit tree is fake, the edible part is developed from fleshy receptacle, and there are many seeds in the heart, such as apple, pear, papaya and hawthorn. . (2) drupe fruit trees: according to the botanical concept, the fruit of this kind of fruit trees is its fruit, which is developed from houses and has obvious outer, middle and inner pericarps; The exocarp is thin and the mesocarp is fleshy, which is an edible part. The endocarp is lignified and becomes a hard core, such as peach, apricot, plum, cherry and hammer. Nut fruit trees: The fruits or seeds of this kind of fruit trees have hard shells, and the edible parts are cotyledons or endosperm of seeds, such as walnuts, chestnuts, ginkgo, pistachios, hazelnuts and so on. (4) Berry fruit trees: The fruits of these fruit trees are small and juicy, such as grapes, gooseberries, kiwis and raspberries. ⑤ Persimmon and jujube fruit trees: This kind of fruit trees include persimmon, Junqianzi (black jujube), jujube and Zizyphus jujuba. (2) Evergreen fruit trees ① Citrus fruit trees: The fruits of this kind of fruit trees are citrus fruits, such as orange, orange, pomelo, tangerine, lemon, bitter orange, wampee and grapefruit. ② Berry fruit trees: the fruits are juicy, such as carambola, peach blossom, even fog, pistachio, Fan Shi orange, papaya and Fayue fruit. Litchi fruit trees: including litchi, longan and whistle. Drupe fruit trees: including olives, olives, mangoes, bayberry and Phyllanthus emblica. ⑤ Nut fruit trees: including cashew nuts, coconuts, torreya grandis, Brazil nuts, mangosteen (mango persimmon) and durian. ⑥ Pod trees: including sour beans, carob trees, winged beans and apple trees. ⑦ Fruit trees with many fruits or carpels, such as pineapple breadfruit, annona, annona spinosa, etc. Herbaceous fruit trees; Banana and pineapple. Pet-name ruby vine (vine) fruit trees; Passion flower, Elaeagnus angustifolia, etc.