2, breast milk is the baby's most natural food, it is not only easy to digest, its nutrients are also the most comprehensive, even the best milk powder can not replace breast milk. Breastfeeding is not only a choice of feeding methods, but also an important health choice for mothers and babies. The World Health Organization suggests that exclusive breastfeeding is the best way to feed infants within 6 months. After adding complementary food to the baby, it is recommended that the mother continue breastfeeding until she is two years old or longer. According to the latest survey report released by China Development Research Foundation, the exclusive breastfeeding rate in China is generally low (only 29.2%) in half a year, which is lower than the world average (43%), and there is still a big gap with the goal of 50% set in China Children's Development Program 201-2020.