Postpartum grumpiness and irritability are actually related to the hormones after delivery, but they may also be influenced by the surrounding area, and may be postpartum emotional instability as a manifestation of postpartum depression. Postpartum depression does not necessarily mean not talking or crying a lot, but may also show anxiety and postpartum mood irritability and irritability. In particular, new mothers may not feel confident about breastfeeding or may be angry with others when they have difficulty breastfeeding. In addition, the mother may feel unappreciated after giving birth, and may feel frustrated and angry because everyone around her cares about the baby and no one cares about her. It is also possible that the mother’s temper was bad before she became pregnant, and it is not possible to improve her personality after becoming a mother. If it is caused by the previous reasons, social support and timely psychological guidance are needed. In fact, the incidence of postpartum depression is higher in the postpartum period, which used to be thought to reach 20%, but now it is found to be higher. If it is a case of good temper before delivery and irritability after delivery, be alert to the occurrence of postpartum depression and family members should strengthen their care and encouragement to the mother. If this situation is repeated and cannot be solved, you can consult a relevant specialist to be able to take medication or give psychological guidance. If a mother has a bad temper before pregnancy, she should strengthen her own cultivation and not to lose her temper casually. When you lose your temper, the hormone level in your body will change, and the change in hormone secretion will also affect the hormone change in your breast milk. The child may also experience emotional changes after feeding on the breast milk, so a good-tempered mother will raise a good-tempered child.