Leaves, scape and flowers are eaten as vegetables; Seeds can be used as medicine, and have the effects of tonifying kidney, strengthening stomach, refreshing, stopping sweating and arresting astringency. In Chinese medicine, some people call leeks "intestinal grass".

Promoting qi and regulating blood: leek is pungent in nature, and has the functions of removing blood stasis and promoting blood circulation, promoting qi circulation and guiding stagnation. It is suitable for traumatic injury, nausea, enteritis, hematemesis and chest pain.

Runchang laxative: leek contains a lot of vitamins and crude fiber, which can promote gastrointestinal peristalsis, treat constipation and prevent intestinal cancer.