Breast milk is the most ideal natural nutrient given by nature to infants. Breastfeeding is not only safe and economical, but also strengthens infants’ resistance to diseases and promotes emotional communication between mothers and infants. With the progress of society, people are increasingly aware that breastfeeding has an extremely important role in the health of mothers and infants. The positive effects of breastfeeding on infant health are mainly in the following areas: 1. The risk of diarrhea, respiratory and skin infections is less in exclusively breastfed infants, and infants are more resistant. 2.Promote the development of various body organs of infants, and can promote the growth of body weight, height and other physical indicators. 3.Reduce the occurrence of necrotizing enterocolitis and sudden infant death syndrome, and reduce the occurrence of infantile diabetes and childhood lymphadenoma. 4.Social psychological research shows that the frequent contact between the baby and the mother’s skin guarantees that the baby gets constant warmth and protection. The mutual influence between mother and child during breastfeeding will promote the infant’s emotional development and social adaptation. Studies have confirmed that breast milk is associated with high infant IQ. The positive effects of breastfeeding on the mother’s health are mainly in the following areas: 1. Promoting the postpartum recovery of the mother and the successful transition from a pregnant to a non-pregnant state. 2.The oxytocin produced through breastfeeding promotes the contraction of the uterus, which can reduce postpartum bleeding and enable the uterus to repair. 3.Reduces the risk of breast and ovarian tumors in women, and also cures diseases such as endometriosis. 4.It helps to improve the mother’s mood and relieve maternal stress; the hormones secreted during breastfeeding make the mother more relaxed and promote her physical and mental health. However, failure to master the correct breastfeeding method during breastfeeding results in nipple indentation, nipple cracking, breast swelling, flat nipples and other problems, which seriously affects the baby’s access to breast milk and also affects the successful breastfeeding. Mothers should build up their confidence in feeding their children during pregnancy and make specific preparations, such as scrubbing the nipples with warm water and pulling them outward several times a day during late pregnancy to make the nipple skin firm and prevent nipple invagination to facilitate small sucking. Lactating mothers should pay attention to nutrition, get enough sleep, have a happy mood, live a regular life, and not take random medication. Pay attention to the prevention of nipple and breast diseases, especially in the early stage of breastfeeding due to flattened or sunken nipples in some pregnant women, as well as a series of breast problems such as nipple cracking, breast swelling and pain, mastitis, etc. due to the inability to master the correct feeding method. The basic treatment of breast problems is described as follows: 1. Treatment of breast distension and pain: breastfeeding as early as possible, usually half an hour after delivery to promote the smooth flow of milk. Apply warm water to the breasts for 3 to 5 minutes before breastfeeding, and massage the breasts at the same time. Gently shake the breasts to make the milk ducts flow smoothly. Breastfeed the swollen side first, because the baby’s sucking force is strong when it is hungry, which is good for sucking through the mammary ducts. For women with severe breast pain and fever, suspend breastfeeding and treat with antibiotics while using a breast pump to suck up the milk. 2. Treatment of flat nipples or sunken nipples: Build up the mother’s confidence and the breast problem will improve. The baby sucks most of the areola and not the nipple. Give the infant access to the breast and early skin-to-skin contact. Help the mother to have the baby in the correct position when breastfeeding as early as possible. Try different breastfeeding positions, including the ring position. Help the mother stand the nipple up better by pumping with a pump or empty syringe, expressing milk, and feeding from a cup. Milking drops directly into the baby’s mouth. 3, cracked nipples treatment: guidance on the correct feeding and holding position, feeding can be taken in different positions, each feeding, first sucking the nipple cracked light side of the breast, after sucking the heavy side of the breast to reduce sucking pain. Let the baby put down the nipple automatically at the end of the feeding. Do not pull it out forcibly and do not let the baby sleep with the nipple in his mouth. For severe cases, in addition to continuing breastfeeding, treat with milk all over the nipple at the end of feeding, or local application of cod liver oil ointment. In conclusion, the implementation of breastfeeding is indispensable both for the mother and the baby. It has a positive impact not only on the physical health of the mother and the baby, but also on the mental health of the mother and the baby. It is necessary to do a good job of breastfeeding education, so that the whole society is fully aware of the importance and necessity of breastfeeding, so that every mother eliminates the prejudice and misconceptions about breastfeeding, and truly fulfills the sacred duty of breastfeeding babies, so that the whole society and families create a more favorable environment and conditions for breastfeeding.