Fecha de publicación: 09/09/2022 Fuente: Wipo "olive oil" The invention belongs to the field of feeds, and discloses application of estrogen in a coccinella septempunctata feed, the coccinella septempunctata feed and a preparation method of the coccinella septempunctata feed, the artificial feed comprises the following raw materials: bee pupa dry powder, sheep liver dry powder, camellia oleifera pollen, beta carotene, kiwi fruit dry powder, cane sugar, olive oil, purified water, potassium sorbate, oestrone or estradiol. According to the method, the feeding effect of the female coccinella septempunctata is improved through material improvement, the egg laying amount, the feeding frequency, the egg hatching rate and the adult survival rate are more accurately controlled by controlling the content of oestrone or estradiol, the survival rate, the egg hatching rate and the egg laying amount of the coccinella septempunctata are improved, and feeding of the female coccinella septempunctata is more facilitated.