Infants weaned at 7 to 8 months of age is more appropriate, because at this time the growth rate of infants is more stable, and most of them have been added to the complementary food, weaned night milk will not have a greater impact on the nutritional intake of infants, when to give up the night milk is the most appropriate, but also with the baby’s current state, if the baby’s recent discomfort can be appropriately delayed weaned night milk. Infants generally have the habit of eating nighttime milk, nighttime milk for the infant to provide nutrition at the same time, but also affects the infant and the mother’s sleep. When infants are 7-8 months old, most of them have already added complementary foods and their growth rate is stable, so you can try to wean them from nighttime milk at this time. Parents should pay attention to ensure the nutritional intake of infants when weaning them from nighttime milk, so that they can drink enough milk before going to bed, and in the process of weaning them from nighttime milk, parents should pay attention to the weight gain and mental state of infants. If the infant’s weight gain is unsatisfactory and mental state is poor, it may be that night weaning has affected the infant’s nutritional intake and should be actively adjusted. If the infant in the process of weaning, mental depression, easy to cry and other symptoms, should be timely to the professional hospital consultation, clear reasons for targeted treatment.