The invention discloses a breast nursing composition and a preparation method thereof. The repair composition capable of beautifying breasts is mainly prepared from Montana arnica flower extract, Mediterranean cypress seed extract, root and stem extract of radix polygonati officinalis, root extract of radix polygoni multiflori, aesculus hippocastanum extract, grape leaf extract, aloe leaf juice powder, linoleic acid/linolenic acid-polyglycerol ester, geraniol, citronellol, linalool, tocopherol, zinc stearate, succinamide chitosan, sodium glycinate, sodium cocoanutylglutamate, cera alba, citric acid, water and the like. The breast nursing composition can improve blood circulation of the breasts, expand blood vessels and promote blood circulation of breast tissues and can make the breasts healthier, more beautiful and stronger. In addition, the breast nursing composition can further be used for preventing and curing mammary gland diseases such as hyperplasia of mammary glands and mammary gland inflammation and can reduce the mammary gland diseases after being used for a long time.