1, leek, a perennial herb of Liliaceae, is used as medicine with seeds and leaves. Has the effects of invigorating stomach, refreshing, stopping sweating and astringing. Leek is sweet, pungent, warm and nontoxic. Root leaf juice has anti-inflammatory, hemostatic and analgesic effects.

2, people with indigestion or weak gastrointestinal function are prone to heartburn when eating leeks, and should not eat more. Compendium of Materia Medica once recorded: "Eating more leeks makes people dizzy, especially after drinking." Modern medicine believes that people with hyperactivity of yang and febrile diseases are not suitable for eating. People with tonsillitis, nasal empyema and otitis media can't eat leeks. People who don't like spicy food and are prone to allergies should not eat it. Special people eat less leeks.