Oranges are the dried skin of grapefruit. Annona tomentosa Or rutaceae watermelon and its cultivated varieties. Harvest the fruit when it is ripe in late autumn and early winter, cut off the exocarp with a knife, and dry it in the sun or in the shade. This product is strip-shaped or irregular, and the edge shrinks and curls inward. The outer surface is yellow-brown or orange-red, brown after storage, and the surface is covered with yellow-white protruding or concave oil chambers. The inner surface is yellow and white, densely covered with concave light transmission points. Oranges are what we call orange peels in our daily life. The outer red part of the ripe pericarp of citrus and its cultivated varieties (Latin abbreviation). Produced in Huazhou City, Maoming, Guangdong Province. It absorbs minerals and magnesium from the soil in this area. According to the existing historical data, it is speculated that Exocarpium Citri Grandis was originally a wild pomelo tree, because it absorbed the stones contained in the local soil (stones are a wonderful medicine to cure stubborn phlegm and clean addiction, and phlegm is coughed up), and it took a long time to gradually evolve. Because of the peculiar effect of Huazhou orange, it is highly respected by people. The fluffy flowers and fruits are soft and lovely, fragrant and have magical medicinal effects. People take them with them and cherish them. It is the best product for preventing and treating diseases, strengthening body and prolonging life. Since the Ming dynasty, oranges have been listed as imperial medicinal materials by the imperial court, and have been a tribute of the imperial court and widely used as medicine by the world. It has also been confirmed by medical experts at home and abroad. Since ancient times, it has been called "southern ginseng" and "one piece is worth one gold". Li Shizhen's Compendium of Materia Medica in the Ming Dynasty recorded: "Orange is the best product, and its pulp is white, and its effect of benefiting qi, resolving phlegm and relieving cough is twice that of other drugs. . . The more successful he is, the better he is. " "Compendium of Materia Medica" in the Qing Dynasty states: "Orange is used to treat phlegm, eliminate greasy, help digestion, sober up, relax the spleen and relieve crab poison." The Dictionary of Traditional Chinese Medicine says: "Huazhou is orange-red, pungent, bitter and warm, with the functions of resolving phlegm, regulating qi, invigorating spleen and promoting digestion, and treating phlegm stagnation in chest, cough and asthma, vomiting and hiccups, and food retention." People's Republic of China (PRC) Pharmacopoeia (1990 edition) records: "Orange is pungent, bitter and warm, and belongs to lung and spleen meridians. It has the effects of dispelling cold, removing dampness, benefiting qi and resolving phlegm, and can be used for treating wind-cold cough, itchy throat, excessive phlegm, food retention, wine injury, nausea and nausea. " Clinical practice has proved that it has a unique effect on pulmonary tuberculosis, bronchitis, long-term stomachache, relieving cough and resolving phlegm.