Allium tenuifolium, alias: wild onion, wild onion, wild leek, Zhameng flower, twist, thief flower, etc. It is a perennial herb of Liliaceae in Allium. Widely distributed in slopes, grasslands or sand dunes below 2000 meters above sea level in Hebei, Inner Mongolia, Heilongjiang, Jilin, Liaoning, Shandong, Shanxi, Gansu, Sichuan, Shaanxi, Ningxia, Henan, Jiangsu and Zhejiang. Its flowers contain 1 1 kinds of natural aromatic substances, which is an excellent seasoning for woks, hot pots, pasta and cold dishes in northern China. Long-term consumption has the effects of lowering blood sugar, lowering blood fat, softening blood vessels, preventing tumors, detoxicating and strengthening yang.