The difference between leek and allium is that leek is the stem and leaves of leeks, which has food value; while allium is a kind of Chinese herb, which has medicinal value and has the effect of promoting yang and dispersing knots. Leek white is a common vegetable in life, leek white as the name suggests refers to the stem and leaves of leeks, because of its color white so called leek white. Chives have a good role in promoting digestion, laxative effect, moderate consumption of the human body has many benefits. Allium cepa is a kind of Chinese herbal medicine, is the lily plant rootlets garlic sticky dry bulb. It has a good effect of Yang dispersal, qi stagnation, can be used to treat heart yang insufficiency caused by chest paralysis (chest pain) heart pain, but also to treat gastric cold qi stagnation caused by the epigastric (abdomen) plumpness (stomach distension discomfort) distension and pain and other conditions. The above is the difference between leek white and Allium cepa. As Allium cepa is a drug, specific medication should consult a professional physician’s advice, not blindly self-medication, so as not to cause damage to the organism.