The success of breastfeeding can be judged by the physiological aspects such as the presence of gastrointestinal discomforts, allergies, etc.; and the psychological aspects such as the absence of crying when drinking milk. Breastfeeding transfer usually refers to the situation where a baby switches from breastfeeding to formula feeding, or changes the type of formula. To determine whether the switch is successful, you can look at the physiological aspects of the baby, such as whether there is diarrhea, nausea, vomiting and other digestive symptoms. Some babies may also have allergic reactions such as rashes. Psychological aspects of the baby’s milk drinking, no refusal, no crying and other signs, then it represents the acceptance of the switch. Baby’s milk switch must follow the principle of gradual and orderly progress, and must not be rushed. Pay attention to your baby’s digestion and mood. Breastfeeding conversion must be carried out when the baby is healthy and in good spirits.