Wood and Hovenia Citriodora are different in flavor and attribution, main treatment, etc.. 1. Sexual flavor to the meridian: wood flavor pungent, bitter, warm; to the spleen, stomach, liver, lung meridian. Citrus aurantium flavor bitter, pungent, sour, warm; to the spleen, stomach, large intestine meridian. 2. Indications: Muxiang is used for treating fullness in the chest, distension and pain in the stomach and abdomen, vomiting and diarrhea, diarrhea and dysentery (diarrhea with acute abdominal pain and discomfort in the anus). Citrus aurantium is used in the treatment of gastrointestinal stagnation, damp-heat diarrhea, chest paralysis (a disease characterized by stuffy pain in the chest, or even chest pain across the back, and wheezing and not being able to lie down), stagnation of qi in the chest and hypochondrium, and post-partum abdominal pain. The internal organs are dry and hot, yin deficiency and fluid deficiency is prohibited to take Muxiang. Citrus aurantium should be used with caution for weak spleen and stomach and pregnant women. Specific medication should be carried out under the guidance of a specialist, not unauthorized use of medication.