When a woman cries a lot or has an emotional reaction, it may have a certain effect on the amount and quality of breast milk secretion, which is generally very limited, but a small number of people will have a more pronounced effect, and the effect varies with each person’s specific situation. The secretion of milk is directly related to prolactin, and once prolactin is not secreted enough, it will directly lead to a decrease in lactation and even affect the quality of milk, and in more serious cases, weaning or lactation will occur, thus affecting breastfeeding. In addition, because people get excited when they are angry, the sympathetic nervous system will excite, causing its terminals to release a large amount of norepinephrine, while the adrenaline medulla also secretes a large amount of adrenaline, which may be absorbed by the baby through the breast milk, causing the baby’s heartbeat to speed up, immunity to decline, and digestive function to decrease, affecting the baby’s growth and development. Therefore, pregnant women should maintain emotional stability during breastfeeding, do not get overly excited, and their family members should communicate with them in a timely manner and give them more love and care to relieve their tension and anxiety.