Human milk is not changed by blood, but is secreted by the mammary glands. With the end of a woman’s labor, the pituitary gland secretes large amounts of lactogen and growth hormone to stimulate the breasts, causing the mammary glands to secrete breast milk and discharge it through the ducts. The components of breast milk are obtained mainly through absorption from the blood and new synthesis by the mammary glands. The blood provides immunoglobulins, minerals, vitamins, etc., which provide nutritional factors for the baby and promote the development of the baby’s immune function. The mammary gland cells synthesize proteins and lactose, which are necessary for the growth and development of the baby. Therefore, it cannot be said that human breast milk is blood change. In addition, breast milk is a natural food suitable for babies, which is quite beneficial to them and can help keep them away from diseases. For better secretion of breast milk, the baby mother can let her baby suck more on the nipple to stimulate the secretion of prolactin. At the same time, you should actively supplement nutrition by eating more foods rich in protein, vitamins and minerals, such as milk, eggs, vegetables and fruits, etc. You can also drink some crucian carp soup, pig’s feet soup, etc., which can promote the secretion of milk while avoiding incomplete absorption of nutrition by the baby. If the amount of breast milk is low, massage or medication can be performed under the guidance of a professional physician. If none of them can achieve improvement, you can use infant formula instead.