The invention discloses a breast enlargement product and a preparing method thereof. The breast enlargement product is prepared from, papaw, lettuce, peanuts, parts of Chinese yam, lactic acid bacterium strains, acetic acid bacterium strains, myrica nana cheval, ajowan-caraway seeds, asiatic bilberry leaves,  amomum cardamomum, thyme, and others. The breast enlargement drink is convenient to drink, capable of being stored for a long time, good in breast enlargement effect and free from side effects after being drunk.