Allium cepa belongs to the Chinese herbal medicine, and its common name is Allium cepa head, small root garlic, wild garlic. Allium cepa is the dried bulb of Allium cepa or Allium sativum, family Liliaceae, with pungent and bitter flavor, warm nature, and belongs to the heart, lung, stomach and large intestine meridians. The efficacy of Allium cepa is to promote Yang dispersal, move Qi and direct stagnation. If you have chest paralysis (stuffy pain in the chest) heart pain, abdominal plumpness (stomach distension and discomfort) distension, diarrhea and dysentery after the disease, you can use Allium cepa under the guidance of a doctor to treat or improve. In order to ensure the safety of medication, as well as to follow the principle of evidence-based medication, it is recommended to use Chinese herbs to treat or improve diseases under the guidance of a professional physician’s evidence-based guidance, and not to blindly use medication without authorization in order to prevent the dangers of improper use of medication.