Vitamin B6 can return milk. Vitamin B6 intake into the human body, after being absorbed and digested by the human gastrointestinal tract, enters the human blood circulation system, after transferring to the brain, stimulates the dopamine secretion hormone in the human body, and also inhibits the human pituitary gland’s stimulation of the ovaries, relieves the secretion of pituitary lactogen, thus increasing the content of the substance secreted by the human breast, and plays the role of milk return. In addition, vitamin B6 can increase the content of vitamins and amino acids in the human body after entering the body, which can not only increase the elasticity of human blood vessels, promote blood circulation in the human body, increase the blood content in the female breast area, and have the effect of promoting the return of milk, but also make use of various vitamins to improve the basal metabolic rate of the human body, promote the endocrine balance of lactating women, improve the content of blood nutrients, and have the effect of returning milk. It has the effect of returning milk.