1. Harmonize stomach, reduce adverse reaction, orange taste acid, cold nature, enter liver and stomach meridian. It has the function of appetizing moderately, reducing adverse reactions and stopping nausea. Good for vomiting caused by dietary stagnation, floating wind and nausea in the stomach, liver and stomach depression and heat and other diseases. 2. Broad chest knot, orange cold, heat clearing, good heat clearing lung and chest, due to heat in the lungs, or exogenous wind and heat, hot body fluid for phlegm, phlegm heat knot in the chest, Qi obstruction, chest pain, cough and asthma, phlegm thick yellow, even cough blood, or phlegm smelly, bored fever, moss yellow, pulse slippery number, treatment is appropriate. Use orange, relieve heat and remove phlegm, widen chest knot, cool blood and stop bleeding, the effect is remarkable. 3. Elimination of gallbladder, due to external evil invasion, or emotional injury, as well as physical weakness, so that Qi stagnation, body fluid accumulation into phlegm. For example, Danxi Heart Law: "Phlegm is everything, rising and falling with the air, everywhere." "People who have lumps on their body, middle and bottom are mostly phlegm." Therefore, gall spontaneous occurrence and phlegm coagulation have a certain internal relationship. If phlegm condenses on both sides of the laryngeal knot, it is gall. Its symptoms and laryngeal nodules on both sides of the mass lie outside the skin lining, local not red and not hot, according to its solid or cystic sexy, tongue coating thin and greasy, smooth pulse, treatment is appropriate to use orange clearing heat and phlegm, relieve depression and dissolve knots. 4. The poison of killing fish and crab, the sour aroma of orange, the acid can kill bacteria, have the function of waking up the spleen and reducing stomach adverse reaction. It has better flavoring and detoxifying and sobering effect for overdrinking or making fish and crab dishes. Make the dishes more palatable and delicious. 5. Identification and application, orange and orange core, one is orange meat, one is orange core, the meat tends to stop nausea, broad chest diaphragm, eliminate gall, fresh fish and crab poison. The orange nucleus tends to treat hernia, gonorrhea, low back pain, facial acne, liver and lung diseases, while the orange nucleus tends to treat kidney diseases.