(i) For infants 1. Nutrition: breast milk contains the most natural nutrients; breast milk composition changes with the increasing age of the infant to suit the infant’s needs. 2.Protection: protect infants from infections, diarrhea, otitis media, allergic diseases; reduce the risk of sudden infant death syndrome (SIDS), necrotizing small intestinal colitis (NEC); prevent allergic diseases, such as asthma, eczema; prevent chronic diseases such as obesity and hypertension. Song Zhijiao, Department of Obstetrics and Gynecology, Shanghai Tenth People’s Hospital 3.Promote development: promote the development of brain cells and intelligence; the movement of sucking has a catalytic effect on the development of language skills. 4, emotion: breastfeeding strengthens the emotional bond between mother and baby, laying the foundation for the development of emotional intelligence in infants. (2) For mothers 1. Health: Promote uterine recovery and reduce postpartum bleeding; reduce the risk of breast cancer and ovarian cancer; help mothers recover their body shape as soon as possible and consume 500 calories a day. (2) Emotion: Mothers who breastfeed are more confident and play an important role in the communication between mothers and babies throughout their lives. (3) For families 1.Economy: Save time, reduce expenses, and reduce waste. 2.Convenience: supply at any time, save time and effort, reduce pollution. 3.Saving: breastfeeding baby is healthier, so that parents have more energy to cope with the stressful work and reduce sick leave. (D) to society 1.Breast-feeding children have good health and are less prone to disease, which is conducive to improving the physical quality of all people. 2.Breastfeeding mothers are loving to their babies, which helps the development of children’s intelligence and social skills, and helps family harmony and social stability.