Fructus aurantii, a traditional Chinese medicine, has the effects of eliminating accumulation and resolving phlegm, regulating qi and broadening the body, strengthening the spleen and appetizing the stomach, and promoting stagnation and flatulence. It has a good therapeutic effect on the common diseases in clinic, such as food retention failure, chest and flank fullness, anus prolapse, etc. Modern medical research has confirmed that the fructus aurantii contains various volatile oils and flavonoid glycosides, which have the effects of calming, boosting pressure, diuresis, strengthening heart, protecting liver and bile, anti-inflammatory, stimulating uterus, inhibiting allergy, etc. Therefore, it can treat clinical uterine prolapse, constipation and other diseases. Fructus aurantii can be combined with malt, tangerine peel, divine yeast and other drugs to treat abdominal distention due to food accumulation. Combined with Rhizoma Cyperi and Radix Bupleuri, it can treat chest pain and hypochondriac pain caused by liver qi accumulation.