Studies have shown that breastfed babies develop healthier, and the effects include enhancing immunity, improving intelligence, reducing the occurrence of sudden infant death syndrome, reducing childhood obesity, and reducing the risk of allergic diseases. In the past few decades, there has been more and more evidence that breastfeeding is beneficial to health, and the recommendations put into practice have continued to increase. At present, the World Health Organization believes that breastfeeding can reduce child mortality, and its health benefits can continue into adulthood. However, when some babies cannot directly suck breast milk, or when the mother's nipple has a problem, the existence of breast pump can better solve the problem of breast feeding under special circumstances.