Orange (Citrus aurantium L.) is a citrus plant in the Rutaceae family, which can be used for health food. Its bioactive components are mainly flavonoids, alkaloids, and volatile oil compounds. Modern pharmacological research has confirmed that sour orange fruit and its extracts have positive effects on the gastrointestinal tract, cardiovascular system, and central nervous system, and have anti obesity, antioxidant, anti-cancer and other effects.