Abstract: Celeries are common vegetables in China. Among all the flavonoids it contains, apigenin and its glucosides, quercetin, kaempferol, luteolin are the richest. This paper summarized the many factors which could influence the content of flavonoids in celeries, including varieties, sampling parts and growing periods. As to its bioactivities, celery flavonoids had the effect of antioxidant, anti-cancer and anti-cardiovascular diseases. In reproductive system, celery flavonoids could inhibit the secretion of female hormone and presentational hormone.