Citrus aurantium is a traditional Chinese medicine, which is the near-ripe fruit of the sour orange and its cultivated varieties in the family Rutaceae. It is used to treat: firstly, congestion in the upper jiao, fullness in the chest and diaphragm, and painful distension in the ribs. Secondly, it is good at eliminating stagnation of food, distension and pain in the abdomen, yelp, vomiting and dysentery. Thirdly, it can be used to treat prolapse and uterine prolapse caused by Qi deficiency and subluxation. Fourth, it can also be used to treat intestinal wind and blood, rubella itching and abdominal pain in pregnancy and other diseases.