Anorexia usually lasts for two weeks to a month before returning to normal, but the duration of anorexia varies from child to child. Anorexia is a normal physiological phenomenon that usually occurs when a child with a good appetite and no signs of illness suddenly becomes disenchanted with breastfeeding for a period of time or has difficulty concentrating on breastfeeding. This condition usually lasts for about two weeks to a month, but the duration varies from child to child, some may last only a week, some may last as long as 2~3 months. Parents need to be aware that when a child does not like to drink milk during the physiological anorexia period, they should not force the child to drink milk. When the child is drinking milk, they should minimize the things around them that can easily attract the child’s attention, so that the child’s attention can be focused on drinking milk as much as possible. If this symptom persists and cannot be relieved, it is recommended to go to the hospital in time and take appropriate methods to deal with it.